./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec11_productSimulator.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 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:03:18,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:03:18,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:03:18,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:03:18,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:03:18,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:03:18,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:03:18,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:03:18,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:03:18,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:03:18,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:03:18,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:03:18,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:03:18,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:03:18,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:03:18,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:03:18,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:03:18,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:03:18,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:03:18,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:03:18,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:03:18,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:03:18,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:03:18,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:03:18,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:03:18,363 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:03:18,363 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:03:18,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:03:18,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:03:18,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:03:18,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:03:18,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:03:18,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:03:18,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:03:18,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:03:18,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:03:18,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:03:18,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:03:18,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:03:18,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:03:18,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:03:18,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:03:18,407 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:03:18,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:03:18,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:03:18,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:03:18,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:03:18,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:03:18,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:03:18,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:03:18,410 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:03:18,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:03:18,411 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:03:18,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:03:18,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:03:18,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:03:18,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:03:18,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:03:18,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:03:18,413 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:03:18,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:03:18,413 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:03:18,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:03:18,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:03:18,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:03:18,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:03:18,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:03:18,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:03:18,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:03:18,415 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:03:18,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:03:18,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:03:18,416 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:03:18,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:03:18,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:03:18,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:03:18,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2021-12-21 13:03:18,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:03:18,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:03:18,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:03:18,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:03:18,662 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:03:18,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-12-21 13:03:18,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cadb01f8b/f1319bad0cf54ffd8aaa937f33a790b6/FLAGc48da52aa [2021-12-21 13:03:19,247 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:03:19,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2021-12-21 13:03:19,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cadb01f8b/f1319bad0cf54ffd8aaa937f33a790b6/FLAGc48da52aa [2021-12-21 13:03:19,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cadb01f8b/f1319bad0cf54ffd8aaa937f33a790b6 [2021-12-21 13:03:19,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:03:19,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:03:19,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:03:19,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:03:19,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:03:19,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:03:19" (1/1) ... [2021-12-21 13:03:19,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6796c130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:19, skipping insertion in model container [2021-12-21 13:03:19,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:03:19" (1/1) ... [2021-12-21 13:03:19,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:03:19,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:03:20,253 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-12-21 13:03:20,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:03:20,307 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:03:20,376 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2021-12-21 13:03:20,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:03:20,436 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:03:20,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20 WrapperNode [2021-12-21 13:03:20,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:03:20,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:03:20,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:03:20,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:03:20,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20" (1/1) ... [2021-12-21 13:03:20,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20" (1/1) ... [2021-12-21 13:03:20,575 INFO L137 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1306 [2021-12-21 13:03:20,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:03:20,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:03:20,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:03:20,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:03:20,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20" (1/1) ... [2021-12-21 13:03:20,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20" (1/1) ... [2021-12-21 13:03:20,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20" (1/1) ... [2021-12-21 13:03:20,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20" (1/1) ... [2021-12-21 13:03:20,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20" (1/1) ... [2021-12-21 13:03:20,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20" (1/1) ... [2021-12-21 13:03:20,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20" (1/1) ... [2021-12-21 13:03:20,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:03:20,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:03:20,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:03:20,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:03:20,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20" (1/1) ... [2021-12-21 13:03:20,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:03:20,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:03:20,688 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) [2021-12-21 13:03:20,713 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 [2021-12-21 13:03:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-21 13:03:20,725 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-21 13:03:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-12-21 13:03:20,725 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-12-21 13:03:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-12-21 13:03:20,726 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-12-21 13:03:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-12-21 13:03:20,726 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-12-21 13:03:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-21 13:03:20,726 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-21 13:03:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-12-21 13:03:20,727 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-12-21 13:03:20,727 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-21 13:03:20,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-21 13:03:20,727 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-12-21 13:03:20,727 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-12-21 13:03:20,727 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-21 13:03:20,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-21 13:03:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-12-21 13:03:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-12-21 13:03:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-21 13:03:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-21 13:03:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-21 13:03:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-21 13:03:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-21 13:03:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-21 13:03:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-12-21 13:03:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-12-21 13:03:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-12-21 13:03:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-12-21 13:03:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-21 13:03:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-21 13:03:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-21 13:03:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-21 13:03:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-21 13:03:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-21 13:03:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-21 13:03:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-12-21 13:03:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-12-21 13:03:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-21 13:03:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-21 13:03:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-21 13:03:20,730 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-21 13:03:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-21 13:03:20,730 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-21 13:03:20,730 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-12-21 13:03:20,730 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-12-21 13:03:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:03:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-21 13:03:20,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-21 13:03:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-21 13:03:20,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-21 13:03:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-12-21 13:03:20,731 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-12-21 13:03:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-12-21 13:03:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-12-21 13:03:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-12-21 13:03:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-12-21 13:03:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-12-21 13:03:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-12-21 13:03:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-21 13:03:20,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-21 13:03:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-21 13:03:20,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-21 13:03:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-21 13:03:20,733 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-21 13:03:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-21 13:03:20,734 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-21 13:03:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-21 13:03:20,734 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-21 13:03:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-21 13:03:20,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-21 13:03:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-12-21 13:03:20,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-12-21 13:03:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-12-21 13:03:20,735 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-12-21 13:03:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-21 13:03:20,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-21 13:03:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-21 13:03:20,736 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-21 13:03:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:03:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-21 13:03:20,736 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-21 13:03:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-12-21 13:03:20,736 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-12-21 13:03:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-12-21 13:03:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-12-21 13:03:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-12-21 13:03:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-12-21 13:03:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:03:20,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:03:21,002 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:03:21,004 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:03:21,707 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:03:21,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:03:21,717 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 13:03:21,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:03:21 BoogieIcfgContainer [2021-12-21 13:03:21,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:03:21,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:03:21,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:03:21,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:03:21,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:03:19" (1/3) ... [2021-12-21 13:03:21,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d231f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:03:21, skipping insertion in model container [2021-12-21 13:03:21,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:03:20" (2/3) ... [2021-12-21 13:03:21,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d231f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:03:21, skipping insertion in model container [2021-12-21 13:03:21,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:03:21" (3/3) ... [2021-12-21 13:03:21,726 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2021-12-21 13:03:21,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:03:21,730 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:03:21,779 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:03:21,786 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 [2021-12-21 13:03:21,786 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:03:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 600 states, 446 states have (on average 1.515695067264574) internal successors, (676), 466 states have internal predecessors, (676), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-12-21 13:03:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 13:03:21,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:21,844 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:21,845 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:21,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:21,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2015100890, now seen corresponding path program 1 times [2021-12-21 13:03:21,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:21,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302890614] [2021-12-21 13:03:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:21,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 13:03:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:03:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:03:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 13:03:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 13:03:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:03:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:03:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 13:03:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 13:03:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-21 13:03:22,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:22,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302890614] [2021-12-21 13:03:22,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302890614] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:22,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:22,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:03:22,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889646704] [2021-12-21 13:03:22,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:22,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:03:22,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:22,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:03:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:03:22,440 INFO L87 Difference]: Start difference. First operand has 600 states, 446 states have (on average 1.515695067264574) internal successors, (676), 466 states have internal predecessors, (676), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:23,695 INFO L93 Difference]: Finished difference Result 1063 states and 1612 transitions. [2021-12-21 13:03:23,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:03:23,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 156 [2021-12-21 13:03:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:23,713 INFO L225 Difference]: With dead ends: 1063 [2021-12-21 13:03:23,713 INFO L226 Difference]: Without dead ends: 725 [2021-12-21 13:03:23,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:03:23,722 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 1357 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:23,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1365 Valid, 1618 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 13:03:23,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-12-21 13:03:23,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 593. [2021-12-21 13:03:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 440 states have (on average 1.5113636363636365) internal successors, (665), 459 states have internal predecessors, (665), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-12-21 13:03:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 882 transitions. [2021-12-21 13:03:23,821 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 882 transitions. Word has length 156 [2021-12-21 13:03:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:23,822 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 882 transitions. [2021-12-21 13:03:23,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 882 transitions. [2021-12-21 13:03:23,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-21 13:03:23,837 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:23,838 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:23,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:03:23,839 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:23,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:23,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1644639793, now seen corresponding path program 1 times [2021-12-21 13:03:23,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:23,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751560992] [2021-12-21 13:03:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:23,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:23,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:23,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:23,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:23,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:23,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 13:03:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:23,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:23,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 13:03:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:24,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 13:03:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 13:03:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:24,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:03:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 13:03:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:03:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 13:03:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:24,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 13:03:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:24,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-21 13:03:24,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:24,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751560992] [2021-12-21 13:03:24,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751560992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:24,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:24,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:03:24,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369477312] [2021-12-21 13:03:24,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:24,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:03:24,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:24,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:03:24,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:03:24,074 INFO L87 Difference]: Start difference. First operand 593 states and 882 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:26,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:26,052 INFO L93 Difference]: Finished difference Result 1282 states and 1935 transitions. [2021-12-21 13:03:26,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 13:03:26,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 157 [2021-12-21 13:03:26,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:26,058 INFO L225 Difference]: With dead ends: 1282 [2021-12-21 13:03:26,059 INFO L226 Difference]: Without dead ends: 725 [2021-12-21 13:03:26,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:03:26,062 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 1349 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:26,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 2794 Invalid, 2970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 13:03:26,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-12-21 13:03:26,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 593. [2021-12-21 13:03:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 440 states have (on average 1.4954545454545454) internal successors, (658), 459 states have internal predecessors, (658), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-12-21 13:03:26,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 875 transitions. [2021-12-21 13:03:26,105 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 875 transitions. Word has length 157 [2021-12-21 13:03:26,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:26,105 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 875 transitions. [2021-12-21 13:03:26,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 875 transitions. [2021-12-21 13:03:26,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-21 13:03:26,109 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:26,109 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:26,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:03:26,110 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:26,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:26,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1683806924, now seen corresponding path program 1 times [2021-12-21 13:03:26,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:26,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415766683] [2021-12-21 13:03:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:26,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:03:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 13:03:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 13:03:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:03:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 13:03:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 13:03:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-21 13:03:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-21 13:03:26,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:26,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415766683] [2021-12-21 13:03:26,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415766683] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:03:26,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005662904] [2021-12-21 13:03:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:26,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:03:26,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:03:26,331 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) [2021-12-21 13:03:26,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 13:03:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:26,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 13:03:26,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:03:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-21 13:03:27,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:03:27,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005662904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:27,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:03:27,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-21 13:03:27,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073504191] [2021-12-21 13:03:27,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:27,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:03:27,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:03:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:03:27,009 INFO L87 Difference]: Start difference. First operand 593 states and 875 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:27,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:27,041 INFO L93 Difference]: Finished difference Result 921 states and 1333 transitions. [2021-12-21 13:03:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:03:27,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2021-12-21 13:03:27,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:27,048 INFO L225 Difference]: With dead ends: 921 [2021-12-21 13:03:27,048 INFO L226 Difference]: Without dead ends: 596 [2021-12-21 13:03:27,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:03:27,052 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 1 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1744 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 [2021-12-21 13:03:27,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1744 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:03:27,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-21 13:03:27,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 595. [2021-12-21 13:03:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 442 states have (on average 1.493212669683258) internal successors, (660), 461 states have internal predecessors, (660), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-12-21 13:03:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 877 transitions. [2021-12-21 13:03:27,093 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 877 transitions. Word has length 162 [2021-12-21 13:03:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:27,095 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 877 transitions. [2021-12-21 13:03:27,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:27,097 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 877 transitions. [2021-12-21 13:03:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-21 13:03:27,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:27,100 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:27,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 13:03:27,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:03:27,330 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1892392765, now seen corresponding path program 1 times [2021-12-21 13:03:27,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:27,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363093841] [2021-12-21 13:03:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:27,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 13:03:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 13:03:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 13:03:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 13:03:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 13:03:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-21 13:03:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 13:03:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-21 13:03:27,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:27,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363093841] [2021-12-21 13:03:27,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363093841] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:03:27,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061704857] [2021-12-21 13:03:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:27,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:03:27,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:03:27,524 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) [2021-12-21 13:03:27,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 13:03:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:27,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 13:03:27,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:03:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-21 13:03:28,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:03:28,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061704857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:28,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:03:28,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2021-12-21 13:03:28,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671870090] [2021-12-21 13:03:28,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:28,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:03:28,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:28,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:03:28,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:03:28,165 INFO L87 Difference]: Start difference. First operand 595 states and 877 transitions. Second operand has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 13:03:28,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:28,262 INFO L93 Difference]: Finished difference Result 1136 states and 1682 transitions. [2021-12-21 13:03:28,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:03:28,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 169 [2021-12-21 13:03:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:28,267 INFO L225 Difference]: With dead ends: 1136 [2021-12-21 13:03:28,268 INFO L226 Difference]: Without dead ends: 599 [2021-12-21 13:03:28,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:03:28,273 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 196 mSDsluCounter, 4090 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 4953 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:28,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 4953 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:03:28,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-21 13:03:28,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-12-21 13:03:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 444 states have (on average 1.490990990990991) internal successors, (662), 464 states have internal predecessors, (662), 109 states have call successors, (109), 43 states have call predecessors, (109), 45 states have return successors, (112), 108 states have call predecessors, (112), 108 states have call successors, (112) [2021-12-21 13:03:28,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 883 transitions. [2021-12-21 13:03:28,309 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 883 transitions. Word has length 169 [2021-12-21 13:03:28,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:28,310 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 883 transitions. [2021-12-21 13:03:28,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 13:03:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 883 transitions. [2021-12-21 13:03:28,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-21 13:03:28,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:28,314 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:28,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 13:03:28,541 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,SelfDestructingSolverStorable3 [2021-12-21 13:03:28,541 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:28,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:28,542 INFO L85 PathProgramCache]: Analyzing trace with hash 95242608, now seen corresponding path program 1 times [2021-12-21 13:03:28,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:28,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281340984] [2021-12-21 13:03:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:28,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 13:03:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 13:03:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 13:03:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 13:03:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-21 13:03:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 13:03:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-21 13:03:28,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:28,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281340984] [2021-12-21 13:03:28,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281340984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:28,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:28,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 13:03:28,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29542808] [2021-12-21 13:03:28,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:28,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 13:03:28,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:28,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 13:03:28,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:28,714 INFO L87 Difference]: Start difference. First operand 599 states and 883 transitions. Second operand has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 13:03:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:31,247 INFO L93 Difference]: Finished difference Result 1254 states and 1889 transitions. [2021-12-21 13:03:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:03:31,248 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 170 [2021-12-21 13:03:31,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:31,252 INFO L225 Difference]: With dead ends: 1254 [2021-12-21 13:03:31,253 INFO L226 Difference]: Without dead ends: 733 [2021-12-21 13:03:31,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-12-21 13:03:31,255 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 1559 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 3511 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 4177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 3511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:31,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 3270 Invalid, 4177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 3511 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-21 13:03:31,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-12-21 13:03:31,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 601. [2021-12-21 13:03:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 445 states have (on average 1.489887640449438) internal successors, (663), 465 states have internal predecessors, (663), 109 states have call successors, (109), 43 states have call predecessors, (109), 46 states have return successors, (113), 109 states have call predecessors, (113), 108 states have call successors, (113) [2021-12-21 13:03:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 885 transitions. [2021-12-21 13:03:31,290 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 885 transitions. Word has length 170 [2021-12-21 13:03:31,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:31,291 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 885 transitions. [2021-12-21 13:03:31,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 13:03:31,291 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 885 transitions. [2021-12-21 13:03:31,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-21 13:03:31,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:31,296 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:31,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 13:03:31,296 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:31,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:31,297 INFO L85 PathProgramCache]: Analyzing trace with hash -615292350, now seen corresponding path program 2 times [2021-12-21 13:03:31,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:31,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036861519] [2021-12-21 13:03:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:31,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 13:03:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 13:03:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 13:03:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 13:03:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-21 13:03:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 13:03:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-21 13:03:31,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:31,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036861519] [2021-12-21 13:03:31,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036861519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:31,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:31,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 13:03:31,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707131705] [2021-12-21 13:03:31,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:31,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 13:03:31,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:31,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 13:03:31,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:31,506 INFO L87 Difference]: Start difference. First operand 601 states and 885 transitions. Second operand has 10 states, 9 states have (on average 11.222222222222221) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 13:03:33,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:33,943 INFO L93 Difference]: Finished difference Result 1258 states and 1895 transitions. [2021-12-21 13:03:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:03:33,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.222222222222221) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 171 [2021-12-21 13:03:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:33,967 INFO L225 Difference]: With dead ends: 1258 [2021-12-21 13:03:33,967 INFO L226 Difference]: Without dead ends: 737 [2021-12-21 13:03:33,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-12-21 13:03:33,972 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 1531 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 3648 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 4291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 3648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:33,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1559 Valid, 3311 Invalid, 4291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 3648 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 13:03:33,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-12-21 13:03:33,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 603. [2021-12-21 13:03:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 446 states have (on average 1.4887892376681615) internal successors, (664), 467 states have internal predecessors, (664), 109 states have call successors, (109), 43 states have call predecessors, (109), 47 states have return successors, (116), 109 states have call predecessors, (116), 108 states have call successors, (116) [2021-12-21 13:03:34,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 889 transitions. [2021-12-21 13:03:34,002 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 889 transitions. Word has length 171 [2021-12-21 13:03:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:34,002 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 889 transitions. [2021-12-21 13:03:34,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.222222222222221) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-21 13:03:34,003 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 889 transitions. [2021-12-21 13:03:34,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-21 13:03:34,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:34,006 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:34,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:03:34,006 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:34,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1506290165, now seen corresponding path program 1 times [2021-12-21 13:03:34,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:34,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120756976] [2021-12-21 13:03:34,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:34,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 13:03:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:03:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 13:03:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 13:03:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-21 13:03:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-21 13:03:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:34,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:34,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120756976] [2021-12-21 13:03:34,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120756976] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:03:34,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232115667] [2021-12-21 13:03:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:34,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:03:34,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:03:34,130 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) [2021-12-21 13:03:34,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 13:03:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:34,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 13:03:34,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:03:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:34,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 13:03:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:34,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232115667] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 13:03:34,953 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 13:03:34,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-21 13:03:34,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734355478] [2021-12-21 13:03:34,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 13:03:34,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 13:03:34,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:34,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 13:03:34,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:34,955 INFO L87 Difference]: Start difference. First operand 603 states and 889 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (45), 5 states have call predecessors, (45), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 13:03:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:37,319 INFO L93 Difference]: Finished difference Result 1441 states and 2224 transitions. [2021-12-21 13:03:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:03:37,320 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (45), 5 states have call predecessors, (45), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 172 [2021-12-21 13:03:37,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:37,325 INFO L225 Difference]: With dead ends: 1441 [2021-12-21 13:03:37,325 INFO L226 Difference]: Without dead ends: 1116 [2021-12-21 13:03:37,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-21 13:03:37,327 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 1870 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 3294 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 4074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 3294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:37,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 3391 Invalid, 4074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 3294 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 13:03:37,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-21 13:03:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 960. [2021-12-21 13:03:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 752 states have (on average 1.565159574468085) internal successors, (1177), 779 states have internal predecessors, (1177), 160 states have call successors, (160), 43 states have call predecessors, (160), 47 states have return successors, (167), 160 states have call predecessors, (167), 159 states have call successors, (167) [2021-12-21 13:03:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1504 transitions. [2021-12-21 13:03:37,370 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1504 transitions. Word has length 172 [2021-12-21 13:03:37,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:37,371 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 1504 transitions. [2021-12-21 13:03:37,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 7 states have internal predecessors, (138), 2 states have call successors, (45), 5 states have call predecessors, (45), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-21 13:03:37,371 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1504 transitions. [2021-12-21 13:03:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-21 13:03:37,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:37,376 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:37,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-21 13:03:37,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:03:37,600 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:37,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1880528848, now seen corresponding path program 1 times [2021-12-21 13:03:37,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:37,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576983843] [2021-12-21 13:03:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:37,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 13:03:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 13:03:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 13:03:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:03:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 13:03:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 13:03:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:37,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:37,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576983843] [2021-12-21 13:03:37,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576983843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:37,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:37,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:03:37,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370022200] [2021-12-21 13:03:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:37,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:03:37,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:37,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:03:37,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:03:37,723 INFO L87 Difference]: Start difference. First operand 960 states and 1504 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:39,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:39,257 INFO L93 Difference]: Finished difference Result 2215 states and 3537 transitions. [2021-12-21 13:03:39,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:03:39,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 177 [2021-12-21 13:03:39,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:39,266 INFO L225 Difference]: With dead ends: 2215 [2021-12-21 13:03:39,266 INFO L226 Difference]: Without dead ends: 1372 [2021-12-21 13:03:39,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:39,269 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 1539 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:39,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 1915 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 13:03:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-12-21 13:03:39,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1232. [2021-12-21 13:03:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 982 states have (on average 1.579429735234216) internal successors, (1551), 1015 states have internal predecessors, (1551), 202 states have call successors, (202), 43 states have call predecessors, (202), 47 states have return successors, (209), 202 states have call predecessors, (209), 201 states have call successors, (209) [2021-12-21 13:03:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1962 transitions. [2021-12-21 13:03:39,320 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1962 transitions. Word has length 177 [2021-12-21 13:03:39,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:39,320 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1962 transitions. [2021-12-21 13:03:39,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:39,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1962 transitions. [2021-12-21 13:03:39,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-21 13:03:39,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:39,327 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:39,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:03:39,327 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:39,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1123450082, now seen corresponding path program 1 times [2021-12-21 13:03:39,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:39,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930409654] [2021-12-21 13:03:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:39,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 13:03:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 13:03:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 13:03:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 13:03:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 13:03:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-21 13:03:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:39,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:39,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930409654] [2021-12-21 13:03:39,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930409654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:39,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:39,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:03:39,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413029247] [2021-12-21 13:03:39,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:39,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:03:39,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:39,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:03:39,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:03:39,457 INFO L87 Difference]: Start difference. First operand 1232 states and 1962 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:40,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:40,903 INFO L93 Difference]: Finished difference Result 2966 states and 4816 transitions. [2021-12-21 13:03:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:03:40,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2021-12-21 13:03:40,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:40,912 INFO L225 Difference]: With dead ends: 2966 [2021-12-21 13:03:40,912 INFO L226 Difference]: Without dead ends: 1873 [2021-12-21 13:03:40,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:40,916 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 1523 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 694 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:40,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 2012 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [694 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 13:03:40,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2021-12-21 13:03:40,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1733. [2021-12-21 13:03:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1404 states have (on average 1.599002849002849) internal successors, (2245), 1447 states have internal predecessors, (2245), 281 states have call successors, (281), 43 states have call predecessors, (281), 47 states have return successors, (288), 281 states have call predecessors, (288), 280 states have call successors, (288) [2021-12-21 13:03:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2814 transitions. [2021-12-21 13:03:41,002 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2814 transitions. Word has length 178 [2021-12-21 13:03:41,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:41,002 INFO L470 AbstractCegarLoop]: Abstraction has 1733 states and 2814 transitions. [2021-12-21 13:03:41,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2814 transitions. [2021-12-21 13:03:41,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-21 13:03:41,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:41,011 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:41,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:03:41,011 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:41,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:41,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1233552762, now seen corresponding path program 1 times [2021-12-21 13:03:41,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:41,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612156847] [2021-12-21 13:03:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:41,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 13:03:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:03:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 13:03:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 13:03:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 13:03:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-21 13:03:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:41,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:41,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612156847] [2021-12-21 13:03:41,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612156847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:41,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:41,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:03:41,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004346597] [2021-12-21 13:03:41,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:41,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:03:41,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:41,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:03:41,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:03:41,139 INFO L87 Difference]: Start difference. First operand 1733 states and 2814 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:42,557 INFO L93 Difference]: Finished difference Result 4213 states and 6941 transitions. [2021-12-21 13:03:42,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:03:42,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2021-12-21 13:03:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:42,570 INFO L225 Difference]: With dead ends: 4213 [2021-12-21 13:03:42,570 INFO L226 Difference]: Without dead ends: 2682 [2021-12-21 13:03:42,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:42,575 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 1519 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:42,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 1962 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 13:03:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-12-21 13:03:42,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2542. [2021-12-21 13:03:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2094 states have (on average 1.6131805157593124) internal successors, (3378), 2153 states have internal predecessors, (3378), 400 states have call successors, (400), 43 states have call predecessors, (400), 47 states have return successors, (407), 400 states have call predecessors, (407), 399 states have call successors, (407) [2021-12-21 13:03:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 4185 transitions. [2021-12-21 13:03:42,704 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 4185 transitions. Word has length 179 [2021-12-21 13:03:42,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:42,705 INFO L470 AbstractCegarLoop]: Abstraction has 2542 states and 4185 transitions. [2021-12-21 13:03:42,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:42,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 4185 transitions. [2021-12-21 13:03:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-21 13:03:42,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:42,718 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:42,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 13:03:42,719 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:42,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1986337367, now seen corresponding path program 1 times [2021-12-21 13:03:42,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:42,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254918156] [2021-12-21 13:03:42,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:42,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:03:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:03:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 13:03:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 13:03:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 13:03:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-21 13:03:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:42,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:42,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254918156] [2021-12-21 13:03:42,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254918156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:42,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:42,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:03:42,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073038343] [2021-12-21 13:03:42,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:42,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:03:42,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:42,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:03:42,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:03:42,841 INFO L87 Difference]: Start difference. First operand 2542 states and 4185 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:44,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:44,292 INFO L93 Difference]: Finished difference Result 6112 states and 10173 transitions. [2021-12-21 13:03:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:03:44,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 180 [2021-12-21 13:03:44,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:44,309 INFO L225 Difference]: With dead ends: 6112 [2021-12-21 13:03:44,310 INFO L226 Difference]: Without dead ends: 3929 [2021-12-21 13:03:44,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:44,317 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 1537 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:44,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1563 Valid, 1990 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 13:03:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2021-12-21 13:03:44,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3789. [2021-12-21 13:03:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 3179 states have (on average 1.6240956275558351) internal successors, (5163), 3264 states have internal predecessors, (5163), 562 states have call successors, (562), 43 states have call predecessors, (562), 47 states have return successors, (569), 562 states have call predecessors, (569), 561 states have call successors, (569) [2021-12-21 13:03:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 6294 transitions. [2021-12-21 13:03:44,494 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 6294 transitions. Word has length 180 [2021-12-21 13:03:44,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:44,495 INFO L470 AbstractCegarLoop]: Abstraction has 3789 states and 6294 transitions. [2021-12-21 13:03:44,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:44,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 6294 transitions. [2021-12-21 13:03:44,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-21 13:03:44,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:44,512 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:44,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:03:44,512 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:44,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2049043650, now seen corresponding path program 1 times [2021-12-21 13:03:44,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:44,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323814818] [2021-12-21 13:03:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:44,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 13:03:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:03:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-21 13:03:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 13:03:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-21 13:03:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 13:03:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:44,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:44,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323814818] [2021-12-21 13:03:44,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323814818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:44,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:44,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:03:44,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357044331] [2021-12-21 13:03:44,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:44,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:03:44,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:44,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:03:44,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:03:44,636 INFO L87 Difference]: Start difference. First operand 3789 states and 6294 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:46,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:46,009 INFO L93 Difference]: Finished difference Result 9114 states and 15280 transitions. [2021-12-21 13:03:46,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:03:46,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 181 [2021-12-21 13:03:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:46,035 INFO L225 Difference]: With dead ends: 9114 [2021-12-21 13:03:46,035 INFO L226 Difference]: Without dead ends: 5943 [2021-12-21 13:03:46,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:46,044 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 1540 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:46,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1567 Valid, 1961 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 13:03:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5943 states. [2021-12-21 13:03:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5943 to 5803. [2021-12-21 13:03:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5803 states, 4948 states have (on average 1.6321746160064672) internal successors, (8076), 5077 states have internal predecessors, (8076), 807 states have call successors, (807), 43 states have call predecessors, (807), 47 states have return successors, (814), 807 states have call predecessors, (814), 806 states have call successors, (814) [2021-12-21 13:03:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 9697 transitions. [2021-12-21 13:03:46,294 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 9697 transitions. Word has length 181 [2021-12-21 13:03:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:46,294 INFO L470 AbstractCegarLoop]: Abstraction has 5803 states and 9697 transitions. [2021-12-21 13:03:46,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 9697 transitions. [2021-12-21 13:03:46,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-21 13:03:46,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:46,321 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:46,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:03:46,321 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:46,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:46,322 INFO L85 PathProgramCache]: Analyzing trace with hash 945742769, now seen corresponding path program 1 times [2021-12-21 13:03:46,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:46,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340170422] [2021-12-21 13:03:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:46,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 13:03:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:03:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 13:03:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 13:03:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 13:03:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-21 13:03:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:46,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:46,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340170422] [2021-12-21 13:03:46,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340170422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:46,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:46,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:03:46,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472988034] [2021-12-21 13:03:46,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:46,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:03:46,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:03:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:03:46,427 INFO L87 Difference]: Start difference. First operand 5803 states and 9697 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:47,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:47,906 INFO L93 Difference]: Finished difference Result 14107 states and 23775 transitions. [2021-12-21 13:03:47,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:03:47,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2021-12-21 13:03:47,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:47,944 INFO L225 Difference]: With dead ends: 14107 [2021-12-21 13:03:47,944 INFO L226 Difference]: Without dead ends: 9318 [2021-12-21 13:03:47,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:47,956 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 1514 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 692 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:47,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1540 Valid, 1989 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [692 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 13:03:47,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9318 states. [2021-12-21 13:03:48,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9318 to 9178. [2021-12-21 13:03:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9178 states, 7830 states have (on average 1.6339719029374202) internal successors, (12794), 8037 states have internal predecessors, (12794), 1300 states have call successors, (1300), 43 states have call predecessors, (1300), 47 states have return successors, (1307), 1300 states have call predecessors, (1307), 1299 states have call successors, (1307) [2021-12-21 13:03:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9178 states to 9178 states and 15401 transitions. [2021-12-21 13:03:48,326 INFO L78 Accepts]: Start accepts. Automaton has 9178 states and 15401 transitions. Word has length 182 [2021-12-21 13:03:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:48,326 INFO L470 AbstractCegarLoop]: Abstraction has 9178 states and 15401 transitions. [2021-12-21 13:03:48,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 9178 states and 15401 transitions. [2021-12-21 13:03:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-21 13:03:48,369 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:48,369 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:48,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:03:48,370 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:48,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:48,370 INFO L85 PathProgramCache]: Analyzing trace with hash -946621950, now seen corresponding path program 1 times [2021-12-21 13:03:48,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:48,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680846132] [2021-12-21 13:03:48,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:48,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 13:03:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 13:03:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 13:03:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 13:03:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-21 13:03:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-21 13:03:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:48,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:48,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680846132] [2021-12-21 13:03:48,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680846132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:48,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:48,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:03:48,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737247833] [2021-12-21 13:03:48,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:48,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:03:48,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:48,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:03:48,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:03:48,476 INFO L87 Difference]: Start difference. First operand 9178 states and 15401 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:50,159 INFO L93 Difference]: Finished difference Result 23060 states and 39002 transitions. [2021-12-21 13:03:50,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:03:50,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2021-12-21 13:03:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:50,214 INFO L225 Difference]: With dead ends: 23060 [2021-12-21 13:03:50,214 INFO L226 Difference]: Without dead ends: 15392 [2021-12-21 13:03:50,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:50,237 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 1531 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:50,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 2009 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 13:03:50,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15392 states. [2021-12-21 13:03:50,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15392 to 15252. [2021-12-21 13:03:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15252 states, 13082 states have (on average 1.6372114355603118) internal successors, (21418), 13433 states have internal predecessors, (21418), 2122 states have call successors, (2122), 43 states have call predecessors, (2122), 47 states have return successors, (2129), 2122 states have call predecessors, (2129), 2121 states have call successors, (2129) [2021-12-21 13:03:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15252 states to 15252 states and 25669 transitions. [2021-12-21 13:03:50,872 INFO L78 Accepts]: Start accepts. Automaton has 15252 states and 25669 transitions. Word has length 183 [2021-12-21 13:03:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:50,873 INFO L470 AbstractCegarLoop]: Abstraction has 15252 states and 25669 transitions. [2021-12-21 13:03:50,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 15252 states and 25669 transitions. [2021-12-21 13:03:50,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-21 13:03:50,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:50,924 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:50,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:03:50,924 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:50,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:50,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1500766331, now seen corresponding path program 1 times [2021-12-21 13:03:50,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:50,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211140322] [2021-12-21 13:03:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:50,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:50,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:50,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:03:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 13:03:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 13:03:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 13:03:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 13:03:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-21 13:03:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:51,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:51,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211140322] [2021-12-21 13:03:51,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211140322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:51,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:51,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:03:51,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059926704] [2021-12-21 13:03:51,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:51,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:03:51,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:51,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:03:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:03:51,064 INFO L87 Difference]: Start difference. First operand 15252 states and 25669 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:52,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:52,703 INFO L93 Difference]: Finished difference Result 36869 states and 62014 transitions. [2021-12-21 13:03:52,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:03:52,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 184 [2021-12-21 13:03:52,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:52,860 INFO L225 Difference]: With dead ends: 36869 [2021-12-21 13:03:52,860 INFO L226 Difference]: Without dead ends: 24261 [2021-12-21 13:03:52,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:52,887 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 1535 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:52,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1561 Valid, 1941 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 13:03:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24261 states. [2021-12-21 13:03:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24261 to 24121. [2021-12-21 13:03:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24121 states, 20748 states have (on average 1.619770580296896) internal successors, (33607), 21373 states have internal predecessors, (33607), 3325 states have call successors, (3325), 43 states have call predecessors, (3325), 47 states have return successors, (3332), 3325 states have call predecessors, (3332), 3324 states have call successors, (3332) [2021-12-21 13:03:53,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24121 states to 24121 states and 40264 transitions. [2021-12-21 13:03:53,725 INFO L78 Accepts]: Start accepts. Automaton has 24121 states and 40264 transitions. Word has length 184 [2021-12-21 13:03:53,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:53,726 INFO L470 AbstractCegarLoop]: Abstraction has 24121 states and 40264 transitions. [2021-12-21 13:03:53,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 24121 states and 40264 transitions. [2021-12-21 13:03:53,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-21 13:03:53,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:53,922 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:53,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:03:53,922 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:53,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:53,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1673482854, now seen corresponding path program 1 times [2021-12-21 13:03:53,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:53,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529025960] [2021-12-21 13:03:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:53,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 13:03:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 13:03:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 13:03:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-21 13:03:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-21 13:03:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 13:03:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:54,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:54,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529025960] [2021-12-21 13:03:54,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529025960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:54,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:54,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:03:54,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369178563] [2021-12-21 13:03:54,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:54,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:03:54,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:54,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:03:54,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:03:54,056 INFO L87 Difference]: Start difference. First operand 24121 states and 40264 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:56,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:03:56,378 INFO L93 Difference]: Finished difference Result 63722 states and 106674 transitions. [2021-12-21 13:03:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:03:56,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2021-12-21 13:03:56,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:03:56,521 INFO L225 Difference]: With dead ends: 63722 [2021-12-21 13:03:56,521 INFO L226 Difference]: Without dead ends: 43057 [2021-12-21 13:03:56,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:03:56,570 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 1505 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:03:56,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 1988 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 13:03:56,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43057 states. [2021-12-21 13:03:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43057 to 42917. [2021-12-21 13:03:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42917 states, 37094 states have (on average 1.6154634172642477) internal successors, (59924), 37985 states have internal predecessors, (59924), 5775 states have call successors, (5775), 43 states have call predecessors, (5775), 47 states have return successors, (5782), 5775 states have call predecessors, (5782), 5774 states have call successors, (5782) [2021-12-21 13:03:58,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42917 states to 42917 states and 71481 transitions. [2021-12-21 13:03:58,105 INFO L78 Accepts]: Start accepts. Automaton has 42917 states and 71481 transitions. Word has length 185 [2021-12-21 13:03:58,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:03:58,105 INFO L470 AbstractCegarLoop]: Abstraction has 42917 states and 71481 transitions. [2021-12-21 13:03:58,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:03:58,106 INFO L276 IsEmpty]: Start isEmpty. Operand 42917 states and 71481 transitions. [2021-12-21 13:03:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-21 13:03:58,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:03:58,207 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:03:58,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:03:58,207 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:03:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:03:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1784496728, now seen corresponding path program 1 times [2021-12-21 13:03:58,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:03:58,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700067245] [2021-12-21 13:03:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:03:58,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:03:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:03:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:03:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:03:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:03:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:03:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:03:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:03:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:03:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:03:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:03:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:03:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:03:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 13:03:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:03:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 13:03:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-21 13:03:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 13:03:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-21 13:03:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:03:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:03:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:03:58,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:03:58,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700067245] [2021-12-21 13:03:58,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700067245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:03:58,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:03:58,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:03:58,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513747282] [2021-12-21 13:03:58,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:03:58,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:03:58,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:03:58,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:03:58,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:03:58,335 INFO L87 Difference]: Start difference. First operand 42917 states and 71481 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:04:01,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:01,593 INFO L93 Difference]: Finished difference Result 116384 states and 194556 transitions. [2021-12-21 13:04:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:04:01,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 186 [2021-12-21 13:04:01,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:01,829 INFO L225 Difference]: With dead ends: 116384 [2021-12-21 13:04:01,829 INFO L226 Difference]: Without dead ends: 78099 [2021-12-21 13:04:01,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:04:01,920 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 1518 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:01,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 1965 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 13:04:01,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78099 states. [2021-12-21 13:04:04,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78099 to 77959. [2021-12-21 13:04:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77959 states, 67623 states have (on average 1.6143176138296143) internal successors, (109165), 69303 states have internal predecessors, (109165), 10288 states have call successors, (10288), 43 states have call predecessors, (10288), 47 states have return successors, (10295), 10288 states have call predecessors, (10295), 10287 states have call successors, (10295) [2021-12-21 13:04:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77959 states to 77959 states and 129748 transitions. [2021-12-21 13:04:04,522 INFO L78 Accepts]: Start accepts. Automaton has 77959 states and 129748 transitions. Word has length 186 [2021-12-21 13:04:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:04:04,523 INFO L470 AbstractCegarLoop]: Abstraction has 77959 states and 129748 transitions. [2021-12-21 13:04:04,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:04:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 77959 states and 129748 transitions. [2021-12-21 13:04:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-21 13:04:04,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:04:04,653 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:04:04,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:04:04,653 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:04:04,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:04:04,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1684715756, now seen corresponding path program 1 times [2021-12-21 13:04:04,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:04:04,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40489412] [2021-12-21 13:04:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:04:04,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:04:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:04:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:04:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:04:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 13:04:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:04:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 13:04:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:04:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 13:04:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 13:04:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:04:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 13:04:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:04:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 13:04:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 13:04:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:04:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 13:04:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 13:04:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-21 13:04:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-21 13:04:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-21 13:04:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:04:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:04:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-21 13:04:04,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:04:04,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40489412] [2021-12-21 13:04:04,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40489412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:04:04,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:04:04,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:04:04,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376389698] [2021-12-21 13:04:04,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:04:04,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:04:04,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:04:04,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:04:04,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:04:04,785 INFO L87 Difference]: Start difference. First operand 77959 states and 129748 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 13:04:08,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:04:08,712 INFO L93 Difference]: Finished difference Result 145849 states and 242711 transitions. [2021-12-21 13:04:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:04:08,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (29), 5 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 187 [2021-12-21 13:04:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:04:09,203 INFO L225 Difference]: With dead ends: 145849 [2021-12-21 13:04:09,203 INFO L226 Difference]: Without dead ends: 145524 [2021-12-21 13:04:09,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:04:09,265 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 1513 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:04:09,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 2006 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 13:04:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145524 states.