./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:36:36,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:36:36,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:36:36,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:36:36,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:36:36,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:36:36,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:36:36,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:36:36,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:36:36,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:36:36,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:36:36,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:36:36,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:36:36,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:36:36,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:36:36,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:36:36,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:36:36,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:36:36,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:36:36,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:36:36,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:36:36,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:36:36,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:36:36,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:36:36,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:36:36,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:36:36,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:36:36,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:36:36,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:36:36,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:36:36,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:36:36,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:36:36,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:36:36,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:36:36,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:36:36,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:36:36,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:36:36,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:36:36,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:36:36,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:36:36,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:36:36,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 14:36:36,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:36:36,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:36:36,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:36:36,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:36:36,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:36:36,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:36:36,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:36:36,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:36:36,379 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:36:36,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:36:36,380 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:36:36,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 14:36:36,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:36:36,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:36:36,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:36:36,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:36:36,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:36:36,381 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:36:36,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:36:36,381 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:36:36,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:36:36,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:36:36,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:36:36,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:36:36,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:36:36,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:36:36,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:36:36,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:36:36,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 14:36:36,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 14:36:36,384 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:36:36,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:36:36,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:36:36,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:36:36,384 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d [2021-12-14 14:36:36,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:36:36,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:36:36,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:36:36,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:36:36,654 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:36:36,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2021-12-14 14:36:36,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa0c7dfa/4a960c6ec4db4e72bbae625a7599316e/FLAG5ed6a7be6 [2021-12-14 14:36:37,256 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:36:37,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2021-12-14 14:36:37,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa0c7dfa/4a960c6ec4db4e72bbae625a7599316e/FLAG5ed6a7be6 [2021-12-14 14:36:37,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fa0c7dfa/4a960c6ec4db4e72bbae625a7599316e [2021-12-14 14:36:37,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:36:37,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:36:37,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:36:37,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:36:37,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:36:37,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:36:37" (1/1) ... [2021-12-14 14:36:37,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d35b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:37, skipping insertion in model container [2021-12-14 14:36:37,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:36:37" (1/1) ... [2021-12-14 14:36:37,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:36:37,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:36:37,858 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2021-12-14 14:36:38,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:36:38,118 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:36:38,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2021-12-14 14:36:38,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:36:38,266 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:36:38,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38 WrapperNode [2021-12-14 14:36:38,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:36:38,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:36:38,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:36:38,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:36:38,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38" (1/1) ... [2021-12-14 14:36:38,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38" (1/1) ... [2021-12-14 14:36:38,358 INFO L137 Inliner]: procedures = 129, calls = 217, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 884 [2021-12-14 14:36:38,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:36:38,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:36:38,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:36:38,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:36:38,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38" (1/1) ... [2021-12-14 14:36:38,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38" (1/1) ... [2021-12-14 14:36:38,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38" (1/1) ... [2021-12-14 14:36:38,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38" (1/1) ... [2021-12-14 14:36:38,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38" (1/1) ... [2021-12-14 14:36:38,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38" (1/1) ... [2021-12-14 14:36:38,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38" (1/1) ... [2021-12-14 14:36:38,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:36:38,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:36:38,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:36:38,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:36:38,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38" (1/1) ... [2021-12-14 14:36:38,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:36:38,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:36:38,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 14:36:38,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 14:36:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-14 14:36:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-14 14:36:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-14 14:36:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-14 14:36:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-14 14:36:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-14 14:36:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-14 14:36:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-14 14:36:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-14 14:36:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-14 14:36:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-14 14:36:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-14 14:36:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-14 14:36:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-14 14:36:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-14 14:36:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-14 14:36:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-14 14:36:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-14 14:36:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-14 14:36:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-14 14:36:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-14 14:36:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-14 14:36:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-14 14:36:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-14 14:36:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-14 14:36:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:36:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-14 14:36:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-14 14:36:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-14 14:36:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-14 14:36:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-14 14:36:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-14 14:36:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-14 14:36:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-14 14:36:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-14 14:36:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-14 14:36:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-14 14:36:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-14 14:36:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-14 14:36:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-14 14:36:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-14 14:36:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-14 14:36:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-14 14:36:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-14 14:36:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-14 14:36:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-14 14:36:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 14:36:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-14 14:36:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-14 14:36:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:36:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:36:38,756 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:36:38,758 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:36:39,323 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:36:39,339 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:36:39,340 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 14:36:39,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:36:39 BoogieIcfgContainer [2021-12-14 14:36:39,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:36:39,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:36:39,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:36:39,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:36:39,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:36:37" (1/3) ... [2021-12-14 14:36:39,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b8c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:36:39, skipping insertion in model container [2021-12-14 14:36:39,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:36:38" (2/3) ... [2021-12-14 14:36:39,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b8c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:36:39, skipping insertion in model container [2021-12-14 14:36:39,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:36:39" (3/3) ... [2021-12-14 14:36:39,353 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product28.cil.c [2021-12-14 14:36:39,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:36:39,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:36:39,404 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:36:39,410 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 14:36:39,411 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:36:39,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 338 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 264 states have internal predecessors, (391), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2021-12-14 14:36:39,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-14 14:36:39,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:39,466 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:39,466 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:39,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:39,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2126435666, now seen corresponding path program 1 times [2021-12-14 14:36:39,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:39,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47116873] [2021-12-14 14:36:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:39,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:36:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:36:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:36:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 14:36:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 14:36:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 14:36:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:36:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:36:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:36:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:39,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:36:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:40,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:36:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:40,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:36:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:40,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:36:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-14 14:36:40,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:40,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47116873] [2021-12-14 14:36:40,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47116873] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:36:40,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923006300] [2021-12-14 14:36:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:40,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:36:40,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:36:40,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:36:40,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 14:36:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:40,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 14:36:40,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:36:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-14 14:36:40,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:36:40,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923006300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:40,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:36:40,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2021-12-14 14:36:40,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817979794] [2021-12-14 14:36:40,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:40,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 14:36:40,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:40,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 14:36:40,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:36:40,651 INFO L87 Difference]: Start difference. First operand has 338 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 264 states have internal predecessors, (391), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:40,734 INFO L93 Difference]: Finished difference Result 526 states and 764 transitions. [2021-12-14 14:36:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 14:36:40,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2021-12-14 14:36:40,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:40,749 INFO L225 Difference]: With dead ends: 526 [2021-12-14 14:36:40,749 INFO L226 Difference]: Without dead ends: 330 [2021-12-14 14:36:40,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:36:40,759 INFO L933 BasicCegarLoop]: 495 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, 495 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:40,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:36:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-14 14:36:40,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2021-12-14 14:36:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 252 states have (on average 1.507936507936508) internal successors, (380), 256 states have internal predecessors, (380), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-14 14:36:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 487 transitions. [2021-12-14 14:36:40,824 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 487 transitions. Word has length 127 [2021-12-14 14:36:40,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:40,826 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 487 transitions. [2021-12-14 14:36:40,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:40,826 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 487 transitions. [2021-12-14 14:36:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-14 14:36:40,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:40,837 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:40,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 14:36:41,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-14 14:36:41,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:41,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:41,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2060039681, now seen corresponding path program 1 times [2021-12-14 14:36:41,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:41,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644774396] [2021-12-14 14:36:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:41,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:36:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:36:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:36:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 14:36:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:36:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:36:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:36:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:36:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:36:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:36:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:36:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:36:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:36:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-14 14:36:41,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:41,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644774396] [2021-12-14 14:36:41,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644774396] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:36:41,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183196490] [2021-12-14 14:36:41,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:41,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:36:41,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:36:41,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:36:41,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 14:36:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:41,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 14:36:41,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:36:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-14 14:36:41,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:36:41,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183196490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:41,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:36:41,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-14 14:36:41,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965321107] [2021-12-14 14:36:41,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:41,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:36:41,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:41,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:36:41,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:36:41,788 INFO L87 Difference]: Start difference. First operand 330 states and 487 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:41,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:41,827 INFO L93 Difference]: Finished difference Result 515 states and 741 transitions. [2021-12-14 14:36:41,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:36:41,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2021-12-14 14:36:41,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:41,831 INFO L225 Difference]: With dead ends: 515 [2021-12-14 14:36:41,842 INFO L226 Difference]: Without dead ends: 333 [2021-12-14 14:36:41,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:36:41,845 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:41,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:36:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-14 14:36:41,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 332. [2021-12-14 14:36:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 258 states have internal predecessors, (382), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-14 14:36:41,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 489 transitions. [2021-12-14 14:36:41,893 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 489 transitions. Word has length 128 [2021-12-14 14:36:41,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:41,893 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 489 transitions. [2021-12-14 14:36:41,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:41,894 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 489 transitions. [2021-12-14 14:36:41,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 14:36:41,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:41,897 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:41,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 14:36:42,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-14 14:36:42,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:42,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash 803166024, now seen corresponding path program 1 times [2021-12-14 14:36:42,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:42,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552247243] [2021-12-14 14:36:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:42,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:36:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:36:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:36:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 14:36:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 14:36:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:36:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:36:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:36:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:36:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:36:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:36:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:36:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:36:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:36:42,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:42,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552247243] [2021-12-14 14:36:42,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552247243] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:36:42,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032412226] [2021-12-14 14:36:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:42,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:36:42,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:36:42,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:36:42,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 14:36:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:42,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:36:42,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:36:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-14 14:36:42,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:36:42,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032412226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:42,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:36:42,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-14 14:36:42,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432045213] [2021-12-14 14:36:42,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:42,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 14:36:42,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:42,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 14:36:42,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:36:42,757 INFO L87 Difference]: Start difference. First operand 332 states and 489 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, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:42,784 INFO L93 Difference]: Finished difference Result 689 states and 1029 transitions. [2021-12-14 14:36:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 14:36:42,785 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, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2021-12-14 14:36:42,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:42,788 INFO L225 Difference]: With dead ends: 689 [2021-12-14 14:36:42,788 INFO L226 Difference]: Without dead ends: 384 [2021-12-14 14:36:42,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:36:42,791 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 99 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:42,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 950 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:36:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-14 14:36:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 376. [2021-12-14 14:36:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 287 states have (on average 1.519163763066202) internal successors, (436), 291 states have internal predecessors, (436), 66 states have call successors, (66), 23 states have call predecessors, (66), 22 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-12-14 14:36:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 565 transitions. [2021-12-14 14:36:42,816 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 565 transitions. Word has length 134 [2021-12-14 14:36:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:42,826 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 565 transitions. [2021-12-14 14:36:42,826 INFO L471 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, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:42,826 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 565 transitions. [2021-12-14 14:36:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-14 14:36:42,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:42,829 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:42,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 14:36:43,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:36:43,044 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:43,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1022630467, now seen corresponding path program 1 times [2021-12-14 14:36:43,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:43,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509321773] [2021-12-14 14:36:43,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:43,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 14:36:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 14:36:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 14:36:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 14:36:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 14:36:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:36:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:36:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:36:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:36:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:36:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:36:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 14:36:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:36:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:36:43,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:43,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509321773] [2021-12-14 14:36:43,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509321773] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:36:43,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692616960] [2021-12-14 14:36:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:43,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:36:43,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:36:43,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:36:43,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 14:36:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:43,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 14:36:43,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:36:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:36:43,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:36:43,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692616960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:43,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:36:43,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-14 14:36:43,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716878468] [2021-12-14 14:36:43,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:43,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:36:43,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:43,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:36:43,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:36:43,701 INFO L87 Difference]: Start difference. First operand 376 states and 565 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 14:36:43,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:43,777 INFO L93 Difference]: Finished difference Result 743 states and 1120 transitions. [2021-12-14 14:36:43,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:36:43,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2021-12-14 14:36:43,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:43,786 INFO L225 Difference]: With dead ends: 743 [2021-12-14 14:36:43,786 INFO L226 Difference]: Without dead ends: 378 [2021-12-14 14:36:43,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:36:43,792 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 117 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:43,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1776 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:36:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-14 14:36:43,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2021-12-14 14:36:43,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 288 states have (on average 1.5173611111111112) internal successors, (437), 293 states have internal predecessors, (437), 66 states have call successors, (66), 23 states have call predecessors, (66), 23 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) [2021-12-14 14:36:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 568 transitions. [2021-12-14 14:36:43,840 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 568 transitions. Word has length 135 [2021-12-14 14:36:43,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:43,840 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 568 transitions. [2021-12-14 14:36:43,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 14:36:43,841 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 568 transitions. [2021-12-14 14:36:43,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-14 14:36:43,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:43,844 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:43,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 14:36:44,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:36:44,064 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:44,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2063647029, now seen corresponding path program 1 times [2021-12-14 14:36:44,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:44,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080736876] [2021-12-14 14:36:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:44,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:36:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 14:36:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 14:36:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 14:36:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:36:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:36:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:36:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:36:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:36:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:36:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:36:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 14:36:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 14:36:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-14 14:36:44,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:44,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080736876] [2021-12-14 14:36:44,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080736876] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:36:44,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108947971] [2021-12-14 14:36:44,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:44,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:36:44,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:36:44,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:36:44,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 14:36:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:44,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 14:36:44,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:36:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:36:44,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:36:44,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108947971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:44,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:36:44,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-14 14:36:44,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701685828] [2021-12-14 14:36:44,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:44,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:36:44,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:44,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:36:44,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-14 14:36:44,721 INFO L87 Difference]: Start difference. First operand 378 states and 568 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 14:36:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:44,781 INFO L93 Difference]: Finished difference Result 745 states and 1125 transitions. [2021-12-14 14:36:44,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:36:44,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 136 [2021-12-14 14:36:44,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:44,788 INFO L225 Difference]: With dead ends: 745 [2021-12-14 14:36:44,789 INFO L226 Difference]: Without dead ends: 380 [2021-12-14 14:36:44,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:36:44,791 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 116 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:44,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1765 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:36:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-12-14 14:36:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-12-14 14:36:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 289 states have (on average 1.5155709342560553) internal successors, (438), 295 states have internal predecessors, (438), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2021-12-14 14:36:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 574 transitions. [2021-12-14 14:36:44,826 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 574 transitions. Word has length 136 [2021-12-14 14:36:44,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:44,828 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 574 transitions. [2021-12-14 14:36:44,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 14:36:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 574 transitions. [2021-12-14 14:36:44,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-14 14:36:44,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:44,832 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:44,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 14:36:45,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:36:45,047 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:45,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1671129868, now seen corresponding path program 1 times [2021-12-14 14:36:45,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:45,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101178900] [2021-12-14 14:36:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:45,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:36:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:36:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 14:36:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 14:36:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:36:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:36:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:36:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:36:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:36:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:36:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:36:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 14:36:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 14:36:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:36:45,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:45,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101178900] [2021-12-14 14:36:45,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101178900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:45,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:36:45,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 14:36:45,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522620878] [2021-12-14 14:36:45,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:45,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 14:36:45,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:45,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 14:36:45,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:36:45,205 INFO L87 Difference]: Start difference. First operand 380 states and 574 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 14:36:46,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:46,476 INFO L93 Difference]: Finished difference Result 816 states and 1240 transitions. [2021-12-14 14:36:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:36:46,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2021-12-14 14:36:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:46,481 INFO L225 Difference]: With dead ends: 816 [2021-12-14 14:36:46,481 INFO L226 Difference]: Without dead ends: 459 [2021-12-14 14:36:46,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-14 14:36:46,484 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 889 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:46,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 1407 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 14:36:46,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-12-14 14:36:46,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 380. [2021-12-14 14:36:46,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 289 states have (on average 1.5155709342560553) internal successors, (438), 295 states have internal predecessors, (438), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (69), 63 states have call predecessors, (69), 63 states have call successors, (69) [2021-12-14 14:36:46,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 573 transitions. [2021-12-14 14:36:46,511 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 573 transitions. Word has length 137 [2021-12-14 14:36:46,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:46,512 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 573 transitions. [2021-12-14 14:36:46,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 14:36:46,512 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 573 transitions. [2021-12-14 14:36:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-14 14:36:46,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:46,515 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:46,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 14:36:46,515 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:46,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash -937480124, now seen corresponding path program 2 times [2021-12-14 14:36:46,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:46,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686653895] [2021-12-14 14:36:46,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:46,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:36:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:36:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 14:36:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 14:36:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:36:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:36:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:36:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:36:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:36:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:36:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:36:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:36:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 14:36:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:36:46,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:46,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686653895] [2021-12-14 14:36:46,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686653895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:46,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:36:46,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 14:36:46,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669635314] [2021-12-14 14:36:46,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:46,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 14:36:46,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:46,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 14:36:46,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:36:46,670 INFO L87 Difference]: Start difference. First operand 380 states and 573 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 14:36:47,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:47,845 INFO L93 Difference]: Finished difference Result 818 states and 1243 transitions. [2021-12-14 14:36:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:36:47,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 138 [2021-12-14 14:36:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:47,851 INFO L225 Difference]: With dead ends: 818 [2021-12-14 14:36:47,851 INFO L226 Difference]: Without dead ends: 461 [2021-12-14 14:36:47,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-14 14:36:47,853 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 885 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:47,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 1408 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:36:47,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-12-14 14:36:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 382. [2021-12-14 14:36:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 290 states have (on average 1.513793103448276) internal successors, (439), 297 states have internal predecessors, (439), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (71), 63 states have call predecessors, (71), 63 states have call successors, (71) [2021-12-14 14:36:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 576 transitions. [2021-12-14 14:36:47,883 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 576 transitions. Word has length 138 [2021-12-14 14:36:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:47,883 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 576 transitions. [2021-12-14 14:36:47,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 14:36:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 576 transitions. [2021-12-14 14:36:47,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-14 14:36:47,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:47,886 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:47,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 14:36:47,887 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:47,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:47,887 INFO L85 PathProgramCache]: Analyzing trace with hash -343602757, now seen corresponding path program 1 times [2021-12-14 14:36:47,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:47,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916153789] [2021-12-14 14:36:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:47,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:47,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:47,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:36:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:47,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:36:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:36:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:36:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:47,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:36:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:47,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:36:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:36:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:36:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:36:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 14:36:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 14:36:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:36:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:48,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 14:36:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:36:48,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:48,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916153789] [2021-12-14 14:36:48,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916153789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:48,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:36:48,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 14:36:48,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737616312] [2021-12-14 14:36:48,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:48,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 14:36:48,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:48,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 14:36:48,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:36:48,019 INFO L87 Difference]: Start difference. First operand 382 states and 576 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 14:36:49,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:49,213 INFO L93 Difference]: Finished difference Result 818 states and 1242 transitions. [2021-12-14 14:36:49,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 14:36:49,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2021-12-14 14:36:49,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:49,216 INFO L225 Difference]: With dead ends: 818 [2021-12-14 14:36:49,216 INFO L226 Difference]: Without dead ends: 461 [2021-12-14 14:36:49,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:36:49,218 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 887 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:49,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 1407 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 14:36:49,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-12-14 14:36:49,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 382. [2021-12-14 14:36:49,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 290 states have (on average 1.513793103448276) internal successors, (439), 297 states have internal predecessors, (439), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (71), 63 states have call predecessors, (71), 63 states have call successors, (71) [2021-12-14 14:36:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 576 transitions. [2021-12-14 14:36:49,247 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 576 transitions. Word has length 139 [2021-12-14 14:36:49,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:49,247 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 576 transitions. [2021-12-14 14:36:49,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-14 14:36:49,248 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 576 transitions. [2021-12-14 14:36:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-14 14:36:49,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:49,250 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:49,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 14:36:49,251 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1689791289, now seen corresponding path program 1 times [2021-12-14 14:36:49,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:49,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12685166] [2021-12-14 14:36:49,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:49,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:36:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:36:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:36:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 14:36:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:36:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:36:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:36:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:36:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:36:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 14:36:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 14:36:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:36:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 14:36:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-14 14:36:49,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:49,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12685166] [2021-12-14 14:36:49,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12685166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:49,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:36:49,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 14:36:49,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670791290] [2021-12-14 14:36:49,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:49,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 14:36:49,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:49,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 14:36:49,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:36:49,404 INFO L87 Difference]: Start difference. First operand 382 states and 576 transitions. Second operand has 11 states, 10 states have (on average 8.6) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-14 14:36:51,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:51,122 INFO L93 Difference]: Finished difference Result 816 states and 1237 transitions. [2021-12-14 14:36:51,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 14:36:51,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 139 [2021-12-14 14:36:51,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:51,126 INFO L225 Difference]: With dead ends: 816 [2021-12-14 14:36:51,126 INFO L226 Difference]: Without dead ends: 461 [2021-12-14 14:36:51,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-14 14:36:51,128 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 991 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:51,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 1865 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 14:36:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-12-14 14:36:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 382. [2021-12-14 14:36:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 290 states have (on average 1.513793103448276) internal successors, (439), 297 states have internal predecessors, (439), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2021-12-14 14:36:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 575 transitions. [2021-12-14 14:36:51,152 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 575 transitions. Word has length 139 [2021-12-14 14:36:51,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:51,153 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 575 transitions. [2021-12-14 14:36:51,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.6) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-14 14:36:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 575 transitions. [2021-12-14 14:36:51,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-14 14:36:51,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:51,156 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:51,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 14:36:51,156 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:51,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:51,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1067374004, now seen corresponding path program 2 times [2021-12-14 14:36:51,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:51,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792250868] [2021-12-14 14:36:51,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:51,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:36:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:36:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:36:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 14:36:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:36:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:36:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:36:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:36:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:36:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:36:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:36:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:36:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 14:36:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-14 14:36:51,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:51,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792250868] [2021-12-14 14:36:51,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792250868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:51,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:36:51,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 14:36:51,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376459008] [2021-12-14 14:36:51,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:51,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 14:36:51,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 14:36:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:36:51,288 INFO L87 Difference]: Start difference. First operand 382 states and 575 transitions. Second operand has 11 states, 10 states have (on average 8.7) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-14 14:36:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:52,857 INFO L93 Difference]: Finished difference Result 818 states and 1243 transitions. [2021-12-14 14:36:52,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 14:36:52,857 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 140 [2021-12-14 14:36:52,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:52,860 INFO L225 Difference]: With dead ends: 818 [2021-12-14 14:36:52,860 INFO L226 Difference]: Without dead ends: 463 [2021-12-14 14:36:52,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-14 14:36:52,862 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 987 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:52,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 1866 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 14:36:52,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-12-14 14:36:52,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 384. [2021-12-14 14:36:52,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 291 states have (on average 1.5120274914089347) internal successors, (440), 299 states have internal predecessors, (440), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (75), 63 states have call predecessors, (75), 63 states have call successors, (75) [2021-12-14 14:36:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 581 transitions. [2021-12-14 14:36:52,882 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 581 transitions. Word has length 140 [2021-12-14 14:36:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:52,882 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 581 transitions. [2021-12-14 14:36:52,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 8 states have internal predecessors, (87), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-14 14:36:52,883 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 581 transitions. [2021-12-14 14:36:52,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-14 14:36:52,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:52,885 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:52,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 14:36:52,885 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:52,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:52,886 INFO L85 PathProgramCache]: Analyzing trace with hash -932441698, now seen corresponding path program 1 times [2021-12-14 14:36:52,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:52,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805762640] [2021-12-14 14:36:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:52,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:36:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:36:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:36:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 14:36:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:36:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:36:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:36:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:36:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:36:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:36:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:36:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:36:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 14:36:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:36:52,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:52,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805762640] [2021-12-14 14:36:52,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805762640] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:36:52,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075153789] [2021-12-14 14:36:52,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:52,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:36:52,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:36:52,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:36:53,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 14:36:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:53,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 14:36:53,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:36:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:36:53,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:36:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:36:53,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075153789] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:36:53,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 14:36:53,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-14 14:36:53,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546024415] [2021-12-14 14:36:53,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 14:36:53,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 14:36:53,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 14:36:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:36:53,619 INFO L87 Difference]: Start difference. First operand 384 states and 581 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-14 14:36:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:55,084 INFO L93 Difference]: Finished difference Result 972 states and 1541 transitions. [2021-12-14 14:36:55,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 14:36:55,084 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 141 [2021-12-14 14:36:55,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:55,089 INFO L225 Difference]: With dead ends: 972 [2021-12-14 14:36:55,089 INFO L226 Difference]: Without dead ends: 790 [2021-12-14 14:36:55,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-14 14:36:55,091 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 1080 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:55,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2134 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:36:55,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-12-14 14:36:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 687. [2021-12-14 14:36:55,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 530 states have (on average 1.5811320754716982) internal successors, (838), 538 states have internal predecessors, (838), 130 states have call successors, (130), 23 states have call predecessors, (130), 26 states have return successors, (149), 127 states have call predecessors, (149), 127 states have call successors, (149) [2021-12-14 14:36:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1117 transitions. [2021-12-14 14:36:55,144 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1117 transitions. Word has length 141 [2021-12-14 14:36:55,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:55,145 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1117 transitions. [2021-12-14 14:36:55,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 7 states have internal predecessors, (119), 2 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-14 14:36:55,145 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1117 transitions. [2021-12-14 14:36:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-14 14:36:55,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:55,149 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:55,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 14:36:55,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:36:55,376 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:55,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:55,376 INFO L85 PathProgramCache]: Analyzing trace with hash 735109243, now seen corresponding path program 1 times [2021-12-14 14:36:55,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:55,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662674497] [2021-12-14 14:36:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:55,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:36:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:36:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:36:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 14:36:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 14:36:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:36:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:36:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 14:36:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:36:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:36:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:36:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 14:36:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 14:36:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:36:55,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:55,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662674497] [2021-12-14 14:36:55,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662674497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:55,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:36:55,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:36:55,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763184954] [2021-12-14 14:36:55,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:55,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:36:55,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:55,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:36:55,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:36:55,470 INFO L87 Difference]: Start difference. First operand 687 states and 1117 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:56,413 INFO L93 Difference]: Finished difference Result 1693 states and 2820 transitions. [2021-12-14 14:36:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:36:56,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2021-12-14 14:36:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:56,420 INFO L225 Difference]: With dead ends: 1693 [2021-12-14 14:36:56,420 INFO L226 Difference]: Without dead ends: 1074 [2021-12-14 14:36:56,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:36:56,424 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 878 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:56,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 1165 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:36:56,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2021-12-14 14:36:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 987. [2021-12-14 14:36:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 766 states have (on average 1.5966057441253263) internal successors, (1223), 774 states have internal predecessors, (1223), 194 states have call successors, (194), 23 states have call predecessors, (194), 26 states have return successors, (223), 191 states have call predecessors, (223), 191 states have call successors, (223) [2021-12-14 14:36:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1640 transitions. [2021-12-14 14:36:56,478 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1640 transitions. Word has length 147 [2021-12-14 14:36:56,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:56,478 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1640 transitions. [2021-12-14 14:36:56,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1640 transitions. [2021-12-14 14:36:56,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-14 14:36:56,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:56,484 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:56,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 14:36:56,485 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:56,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:56,485 INFO L85 PathProgramCache]: Analyzing trace with hash -101522995, now seen corresponding path program 1 times [2021-12-14 14:36:56,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:56,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510982036] [2021-12-14 14:36:56,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:56,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:36:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:36:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:36:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 14:36:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 14:36:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 14:36:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:36:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-14 14:36:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:36:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:36:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:36:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 14:36:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 14:36:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:36:56,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:56,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510982036] [2021-12-14 14:36:56,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510982036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:56,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:36:56,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:36:56,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632248186] [2021-12-14 14:36:56,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:56,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:36:56,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:56,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:36:56,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:36:56,589 INFO L87 Difference]: Start difference. First operand 987 states and 1640 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:57,586 INFO L93 Difference]: Finished difference Result 2408 states and 4065 transitions. [2021-12-14 14:36:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:36:57,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2021-12-14 14:36:57,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:57,596 INFO L225 Difference]: With dead ends: 2408 [2021-12-14 14:36:57,596 INFO L226 Difference]: Without dead ends: 1542 [2021-12-14 14:36:57,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:36:57,601 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 876 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:57,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 1127 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:36:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2021-12-14 14:36:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1455. [2021-12-14 14:36:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1139 states have (on average 1.6066725197541702) internal successors, (1830), 1147 states have internal predecessors, (1830), 289 states have call successors, (289), 23 states have call predecessors, (289), 26 states have return successors, (318), 286 states have call predecessors, (318), 286 states have call successors, (318) [2021-12-14 14:36:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2437 transitions. [2021-12-14 14:36:57,690 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2437 transitions. Word has length 148 [2021-12-14 14:36:57,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:57,690 INFO L470 AbstractCegarLoop]: Abstraction has 1455 states and 2437 transitions. [2021-12-14 14:36:57,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:57,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2437 transitions. [2021-12-14 14:36:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-14 14:36:57,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:57,700 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:57,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 14:36:57,701 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:57,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:57,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1202814691, now seen corresponding path program 1 times [2021-12-14 14:36:57,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:57,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983574436] [2021-12-14 14:36:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:57,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:36:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:36:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:36:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 14:36:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 14:36:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:36:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:36:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 14:36:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:36:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:36:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:36:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 14:36:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 14:36:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:36:57,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:57,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983574436] [2021-12-14 14:36:57,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983574436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:57,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:36:57,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:36:57,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882574633] [2021-12-14 14:36:57,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:57,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:36:57,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:57,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:36:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:36:57,799 INFO L87 Difference]: Start difference. First operand 1455 states and 2437 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:58,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:58,739 INFO L93 Difference]: Finished difference Result 3455 states and 5906 transitions. [2021-12-14 14:36:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:36:58,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 149 [2021-12-14 14:36:58,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:58,752 INFO L225 Difference]: With dead ends: 3455 [2021-12-14 14:36:58,753 INFO L226 Difference]: Without dead ends: 2246 [2021-12-14 14:36:58,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:36:58,758 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 874 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:58,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 1131 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:36:58,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-12-14 14:36:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2159. [2021-12-14 14:36:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 1720 states have (on average 1.6145348837209301) internal successors, (2777), 1728 states have internal predecessors, (2777), 412 states have call successors, (412), 23 states have call predecessors, (412), 26 states have return successors, (457), 409 states have call predecessors, (457), 409 states have call successors, (457) [2021-12-14 14:36:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 3646 transitions. [2021-12-14 14:36:58,868 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 3646 transitions. Word has length 149 [2021-12-14 14:36:58,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:36:58,869 INFO L470 AbstractCegarLoop]: Abstraction has 2159 states and 3646 transitions. [2021-12-14 14:36:58,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:58,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 3646 transitions. [2021-12-14 14:36:58,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-14 14:36:58,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:36:58,881 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:36:58,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 14:36:58,882 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:36:58,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:36:58,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1263670958, now seen corresponding path program 1 times [2021-12-14 14:36:58,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:36:58,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180024588] [2021-12-14 14:36:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:36:58,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:36:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:36:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:36:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:36:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:36:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:36:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:36:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 14:36:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 14:36:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 14:36:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:36:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 14:36:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:36:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:58,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 14:36:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:59,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:36:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:59,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 14:36:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:59,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 14:36:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:36:59,008 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:36:59,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:36:59,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180024588] [2021-12-14 14:36:59,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180024588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:36:59,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:36:59,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:36:59,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587287997] [2021-12-14 14:36:59,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:36:59,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:36:59,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:36:59,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:36:59,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:36:59,011 INFO L87 Difference]: Start difference. First operand 2159 states and 3646 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:36:59,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:36:59,882 INFO L93 Difference]: Finished difference Result 5074 states and 8760 transitions. [2021-12-14 14:36:59,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:36:59,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2021-12-14 14:36:59,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:36:59,902 INFO L225 Difference]: With dead ends: 5074 [2021-12-14 14:36:59,902 INFO L226 Difference]: Without dead ends: 3365 [2021-12-14 14:36:59,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:36:59,911 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 872 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:36:59,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [887 Valid, 1131 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 14:36:59,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2021-12-14 14:37:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 3278. [2021-12-14 14:37:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 2660 states have (on average 1.6195488721804512) internal successors, (4308), 2668 states have internal predecessors, (4308), 591 states have call successors, (591), 23 states have call predecessors, (591), 26 states have return successors, (662), 588 states have call predecessors, (662), 588 states have call successors, (662) [2021-12-14 14:37:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5561 transitions. [2021-12-14 14:37:00,121 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5561 transitions. Word has length 150 [2021-12-14 14:37:00,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:00,121 INFO L470 AbstractCegarLoop]: Abstraction has 3278 states and 5561 transitions. [2021-12-14 14:37:00,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:00,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5561 transitions. [2021-12-14 14:37:00,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-14 14:37:00,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:00,139 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:37:00,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 14:37:00,139 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:00,140 INFO L85 PathProgramCache]: Analyzing trace with hash -801884583, now seen corresponding path program 1 times [2021-12-14 14:37:00,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:00,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640257131] [2021-12-14 14:37:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:00,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 14:37:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 14:37:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 14:37:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:37:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 14:37:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:37:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 14:37:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 14:37:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-14 14:37:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 14:37:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:00,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:00,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640257131] [2021-12-14 14:37:00,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640257131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:00,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:00,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:37:00,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107690166] [2021-12-14 14:37:00,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:00,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:37:00,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:00,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:37:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:37:00,252 INFO L87 Difference]: Start difference. First operand 3278 states and 5561 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:01,262 INFO L93 Difference]: Finished difference Result 7992 states and 13859 transitions. [2021-12-14 14:37:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:37:01,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 151 [2021-12-14 14:37:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:01,291 INFO L225 Difference]: With dead ends: 7992 [2021-12-14 14:37:01,291 INFO L226 Difference]: Without dead ends: 5396 [2021-12-14 14:37:01,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:37:01,302 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 870 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:01,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 1147 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:37:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2021-12-14 14:37:01,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 5309. [2021-12-14 14:37:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 4315 states have (on average 1.6129779837775202) internal successors, (6960), 4323 states have internal predecessors, (6960), 967 states have call successors, (967), 23 states have call predecessors, (967), 26 states have return successors, (1082), 964 states have call predecessors, (1082), 964 states have call successors, (1082) [2021-12-14 14:37:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 9009 transitions. [2021-12-14 14:37:01,612 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 9009 transitions. Word has length 151 [2021-12-14 14:37:01,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:01,613 INFO L470 AbstractCegarLoop]: Abstraction has 5309 states and 9009 transitions. [2021-12-14 14:37:01,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:01,619 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 9009 transitions. [2021-12-14 14:37:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-14 14:37:01,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:01,674 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:37:01,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 14:37:01,675 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:01,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:01,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1972882062, now seen corresponding path program 1 times [2021-12-14 14:37:01,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:01,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248321478] [2021-12-14 14:37:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:01,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 14:37:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 14:37:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 14:37:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 14:37:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 14:37:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 14:37:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 14:37:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 14:37:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 14:37:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 14:37:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:01,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:01,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248321478] [2021-12-14 14:37:01,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248321478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:01,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:01,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:37:01,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954606698] [2021-12-14 14:37:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:01,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:37:01,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:01,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:37:01,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:37:01,767 INFO L87 Difference]: Start difference. First operand 5309 states and 9009 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:02,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:02,838 INFO L93 Difference]: Finished difference Result 13134 states and 22768 transitions. [2021-12-14 14:37:02,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:37:02,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2021-12-14 14:37:02,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:02,883 INFO L225 Difference]: With dead ends: 13134 [2021-12-14 14:37:02,883 INFO L226 Difference]: Without dead ends: 8884 [2021-12-14 14:37:02,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:37:02,898 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 868 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:02,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 1152 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 14:37:02,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8884 states. [2021-12-14 14:37:03,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8884 to 8797. [2021-12-14 14:37:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8797 states, 7197 states have (on average 1.6109490065304988) internal successors, (11594), 7205 states have internal predecessors, (11594), 1573 states have call successors, (1573), 23 states have call predecessors, (1573), 26 states have return successors, (1766), 1570 states have call predecessors, (1766), 1570 states have call successors, (1766) [2021-12-14 14:37:03,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8797 states to 8797 states and 14933 transitions. [2021-12-14 14:37:03,370 INFO L78 Accepts]: Start accepts. Automaton has 8797 states and 14933 transitions. Word has length 152 [2021-12-14 14:37:03,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:03,370 INFO L470 AbstractCegarLoop]: Abstraction has 8797 states and 14933 transitions. [2021-12-14 14:37:03,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand 8797 states and 14933 transitions. [2021-12-14 14:37:03,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-14 14:37:03,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:03,406 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:37:03,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 14:37:03,406 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:03,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:03,407 INFO L85 PathProgramCache]: Analyzing trace with hash 241176795, now seen corresponding path program 1 times [2021-12-14 14:37:03,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:03,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82058912] [2021-12-14 14:37:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:03,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 14:37:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 14:37:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 14:37:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 14:37:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 14:37:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 14:37:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 14:37:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 14:37:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 14:37:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 14:37:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:03,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:03,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82058912] [2021-12-14 14:37:03,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82058912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:03,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:03,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:37:03,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769994988] [2021-12-14 14:37:03,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:03,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:37:03,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:37:03,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:37:03,510 INFO L87 Difference]: Start difference. First operand 8797 states and 14933 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:04,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:04,870 INFO L93 Difference]: Finished difference Result 22793 states and 39474 transitions. [2021-12-14 14:37:04,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:37:04,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 153 [2021-12-14 14:37:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:04,938 INFO L225 Difference]: With dead ends: 22793 [2021-12-14 14:37:04,938 INFO L226 Difference]: Without dead ends: 15477 [2021-12-14 14:37:04,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:37:04,967 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 866 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:04,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 1175 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:37:04,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15477 states. [2021-12-14 14:37:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15477 to 15390. [2021-12-14 14:37:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15390 states, 12587 states have (on average 1.6016524986096767) internal successors, (20160), 12595 states have internal predecessors, (20160), 2776 states have call successors, (2776), 23 states have call predecessors, (2776), 26 states have return successors, (3113), 2773 states have call predecessors, (3113), 2773 states have call successors, (3113) [2021-12-14 14:37:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15390 states to 15390 states and 26049 transitions. [2021-12-14 14:37:05,870 INFO L78 Accepts]: Start accepts. Automaton has 15390 states and 26049 transitions. Word has length 153 [2021-12-14 14:37:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:05,870 INFO L470 AbstractCegarLoop]: Abstraction has 15390 states and 26049 transitions. [2021-12-14 14:37:05,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand 15390 states and 26049 transitions. [2021-12-14 14:37:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-14 14:37:05,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:05,905 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:37:05,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 14:37:05,906 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:05,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1906410995, now seen corresponding path program 1 times [2021-12-14 14:37:05,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:05,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336422543] [2021-12-14 14:37:05,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:05,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 14:37:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 14:37:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 14:37:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 14:37:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 14:37:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 14:37:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 14:37:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 14:37:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 14:37:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 14:37:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:05,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:05,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336422543] [2021-12-14 14:37:05,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336422543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:05,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:05,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:37:05,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105199361] [2021-12-14 14:37:05,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:06,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:37:06,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:06,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:37:06,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:37:06,001 INFO L87 Difference]: Start difference. First operand 15390 states and 26049 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:07,708 INFO L93 Difference]: Finished difference Result 40749 states and 70457 transitions. [2021-12-14 14:37:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:37:07,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2021-12-14 14:37:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:07,848 INFO L225 Difference]: With dead ends: 40749 [2021-12-14 14:37:07,848 INFO L226 Difference]: Without dead ends: 27447 [2021-12-14 14:37:07,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:37:07,904 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 864 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:07,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 1136 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 14:37:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27447 states. [2021-12-14 14:37:09,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27447 to 27360. [2021-12-14 14:37:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27360 states, 22518 states have (on average 1.5972999378275157) internal successors, (35968), 22526 states have internal predecessors, (35968), 4815 states have call successors, (4815), 23 states have call predecessors, (4815), 26 states have return successors, (5426), 4812 states have call predecessors, (5426), 4812 states have call successors, (5426) [2021-12-14 14:37:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27360 states to 27360 states and 46209 transitions. [2021-12-14 14:37:09,344 INFO L78 Accepts]: Start accepts. Automaton has 27360 states and 46209 transitions. Word has length 154 [2021-12-14 14:37:09,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:09,344 INFO L470 AbstractCegarLoop]: Abstraction has 27360 states and 46209 transitions. [2021-12-14 14:37:09,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 27360 states and 46209 transitions. [2021-12-14 14:37:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-14 14:37:09,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:09,401 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:37:09,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 14:37:09,401 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1103815747, now seen corresponding path program 1 times [2021-12-14 14:37:09,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:09,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896438923] [2021-12-14 14:37:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:09,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 14:37:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 14:37:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 14:37:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 14:37:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 14:37:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 14:37:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 14:37:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 14:37:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 14:37:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 14:37:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:09,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:09,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896438923] [2021-12-14 14:37:09,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896438923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:09,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:09,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:37:09,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185509071] [2021-12-14 14:37:09,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:09,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:37:09,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:09,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:37:09,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:37:09,514 INFO L87 Difference]: Start difference. First operand 27360 states and 46209 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:12,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:12,064 INFO L93 Difference]: Finished difference Result 74536 states and 128056 transitions. [2021-12-14 14:37:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:37:12,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2021-12-14 14:37:12,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:12,286 INFO L225 Difference]: With dead ends: 74536 [2021-12-14 14:37:12,287 INFO L226 Difference]: Without dead ends: 49996 [2021-12-14 14:37:12,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:37:12,395 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 862 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:12,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 1130 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 14:37:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49996 states. [2021-12-14 14:37:14,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49996 to 49909. [2021-12-14 14:37:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49909 states, 41352 states have (on average 1.5914345134455408) internal successors, (65809), 41360 states have internal predecessors, (65809), 8530 states have call successors, (8530), 23 states have call predecessors, (8530), 26 states have return successors, (9673), 8527 states have call predecessors, (9673), 8527 states have call successors, (9673) [2021-12-14 14:37:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49909 states to 49909 states and 84012 transitions. [2021-12-14 14:37:14,830 INFO L78 Accepts]: Start accepts. Automaton has 49909 states and 84012 transitions. Word has length 155 [2021-12-14 14:37:14,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:14,831 INFO L470 AbstractCegarLoop]: Abstraction has 49909 states and 84012 transitions. [2021-12-14 14:37:14,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:14,831 INFO L276 IsEmpty]: Start isEmpty. Operand 49909 states and 84012 transitions. [2021-12-14 14:37:14,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-14 14:37:14,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:14,913 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:37:14,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 14:37:14,913 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:14,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:14,914 INFO L85 PathProgramCache]: Analyzing trace with hash 352220563, now seen corresponding path program 1 times [2021-12-14 14:37:14,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:14,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905378848] [2021-12-14 14:37:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:14,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 14:37:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 14:37:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 14:37:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 14:37:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:14,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 14:37:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:15,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 14:37:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:15,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 14:37:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:15,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 14:37:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:15,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 14:37:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 14:37:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 14:37:15,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:15,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905378848] [2021-12-14 14:37:15,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905378848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:37:15,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:37:15,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 14:37:15,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314025872] [2021-12-14 14:37:15,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:37:15,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 14:37:15,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:15,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 14:37:15,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:37:15,011 INFO L87 Difference]: Start difference. First operand 49909 states and 84012 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:18,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:37:18,634 INFO L93 Difference]: Finished difference Result 93022 states and 160187 transitions. [2021-12-14 14:37:18,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:37:18,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 156 [2021-12-14 14:37:18,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:37:18,967 INFO L225 Difference]: With dead ends: 93022 [2021-12-14 14:37:18,967 INFO L226 Difference]: Without dead ends: 92840 [2021-12-14 14:37:19,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:37:19,005 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 860 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 14:37:19,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 1130 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 14:37:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92840 states. [2021-12-14 14:37:22,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92840 to 92753. [2021-12-14 14:37:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92753 states, 77397 states have (on average 1.5839761231055467) internal successors, (122595), 77405 states have internal predecessors, (122595), 15329 states have call successors, (15329), 23 states have call predecessors, (15329), 26 states have return successors, (17518), 15326 states have call predecessors, (17518), 15326 states have call successors, (17518) [2021-12-14 14:37:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92753 states to 92753 states and 155442 transitions. [2021-12-14 14:37:23,134 INFO L78 Accepts]: Start accepts. Automaton has 92753 states and 155442 transitions. Word has length 156 [2021-12-14 14:37:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:37:23,134 INFO L470 AbstractCegarLoop]: Abstraction has 92753 states and 155442 transitions. [2021-12-14 14:37:23,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 14:37:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 92753 states and 155442 transitions. [2021-12-14 14:37:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-14 14:37:23,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:37:23,244 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:37:23,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 14:37:23,244 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:37:23,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:37:23,245 INFO L85 PathProgramCache]: Analyzing trace with hash -993585476, now seen corresponding path program 1 times [2021-12-14 14:37:23,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:37:23,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606420142] [2021-12-14 14:37:23,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:23,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:37:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 14:37:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 14:37:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:37:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 14:37:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 14:37:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 14:37:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 14:37:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 14:37:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 14:37:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 14:37:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 14:37:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 14:37:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 14:37:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 14:37:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 14:37:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 14:37:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-14 14:37:23,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:37:23,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606420142] [2021-12-14 14:37:23,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606420142] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:37:23,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112290283] [2021-12-14 14:37:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:37:23,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:37:23,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:37:23,455 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:37:23,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 14:37:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:37:23,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 14:37:23,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:37:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-14 14:37:24,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:37:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-14 14:37:24,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112290283] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:37:24,806 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 14:37:24,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 30 [2021-12-14 14:37:24,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167357297] [2021-12-14 14:37:24,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 14:37:24,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-14 14:37:24,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:37:24,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-14 14:37:24,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2021-12-14 14:37:24,808 INFO L87 Difference]: Start difference. First operand 92753 states and 155442 transitions. Second operand has 30 states, 29 states have (on average 8.517241379310345) internal successors, (247), 23 states have internal predecessors, (247), 9 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (41), 11 states have call predecessors, (41), 9 states have call successors, (41)