/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 09:49:19,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 09:49:19,629 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 09:49:19,632 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 09:49:19,632 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 09:49:19,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 09:49:19,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 09:49:19,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 09:49:19,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 09:49:19,659 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 09:49:19,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 09:49:19,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 09:49:19,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 09:49:19,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 09:49:19,661 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 09:49:19,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 09:49:19,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 09:49:19,662 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 09:49:19,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 09:49:19,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 09:49:19,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 09:49:19,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 09:49:19,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 09:49:19,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 09:49:19,664 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 09:49:19,664 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 09:49:19,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 09:49:19,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 09:49:19,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 09:49:19,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 09:49:19,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 09:49:19,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 09:49:19,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:49:19,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 09:49:19,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 09:49:19,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 09:49:19,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 09:49:19,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 09:49:19,667 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 09:49:19,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 09:49:19,667 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 09:49:19,667 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 09:49:19,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 09:49:19,667 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 09:49:19,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 09:49:19,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 09:49:19,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 09:49:19,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 09:49:19,867 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 09:49:19,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product29.cil.c [2023-12-21 09:49:20,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 09:49:21,153 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 09:49:21,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product29.cil.c [2023-12-21 09:49:21,182 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f3f383ec/6bc50f20da824a16871b70e3cab8832e/FLAG0e2cc4424 [2023-12-21 09:49:21,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f3f383ec/6bc50f20da824a16871b70e3cab8832e [2023-12-21 09:49:21,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 09:49:21,199 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 09:49:21,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 09:49:21,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 09:49:21,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 09:49:21,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:21,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2ee2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21, skipping insertion in model container [2023-12-21 09:49:21,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:21,263 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 09:49:21,575 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product29.cil.c[49640,49653] [2023-12-21 09:49:21,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:49:21,645 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 09:49:21,658 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-12-21 09:49:21,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [414] [2023-12-21 09:49:21,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1494] [2023-12-21 09:49:21,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1804] [2023-12-21 09:49:21,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2216] [2023-12-21 09:49:21,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2225] [2023-12-21 09:49:21,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2260] [2023-12-21 09:49:21,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2476] [2023-12-21 09:49:21,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2614] [2023-12-21 09:49:21,661 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2631] [2023-12-21 09:49:21,661 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [3001] [2023-12-21 09:49:21,744 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product29.cil.c[49640,49653] [2023-12-21 09:49:21,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:49:21,799 INFO L206 MainTranslator]: Completed translation [2023-12-21 09:49:21,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21 WrapperNode [2023-12-21 09:49:21,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 09:49:21,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 09:49:21,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 09:49:21,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 09:49:21,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:21,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:21,944 INFO L138 Inliner]: procedures = 132, calls = 218, calls flagged for inlining = 55, calls inlined = 47, statements flattened = 940 [2023-12-21 09:49:21,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 09:49:21,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 09:49:21,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 09:49:21,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 09:49:21,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:21,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:21,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:21,977 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-12-21 09:49:21,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:21,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:21,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:21,994 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:21,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:22,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:22,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 09:49:22,006 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 09:49:22,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 09:49:22,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 09:49:22,007 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (1/1) ... [2023-12-21 09:49:22,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:49:22,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:49:22,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 09:49:22,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 09:49:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-21 09:49:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-21 09:49:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-12-21 09:49:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-12-21 09:49:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-21 09:49:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-21 09:49:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-12-21 09:49:22,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-12-21 09:49:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-21 09:49:22,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-21 09:49:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-21 09:49:22,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-21 09:49:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-21 09:49:22,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-21 09:49:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-21 09:49:22,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-21 09:49:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-21 09:49:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-21 09:49:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-21 09:49:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-21 09:49:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-21 09:49:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-21 09:49:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-21 09:49:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-21 09:49:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-21 09:49:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-21 09:49:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-21 09:49:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-21 09:49:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 09:49:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-21 09:49:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-21 09:49:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-21 09:49:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-21 09:49:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-12-21 09:49:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-12-21 09:49:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-21 09:49:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-21 09:49:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-21 09:49:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-21 09:49:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-21 09:49:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-21 09:49:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-21 09:49:22,110 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-21 09:49:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2023-12-21 09:49:22,111 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2023-12-21 09:49:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-21 09:49:22,111 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-21 09:49:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-21 09:49:22,111 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-21 09:49:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-21 09:49:22,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-21 09:49:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-21 09:49:22,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-21 09:49:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-21 09:49:22,111 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-21 09:49:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 09:49:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 09:49:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 09:49:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 09:49:22,112 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-21 09:49:22,112 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-21 09:49:22,112 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-12-21 09:49:22,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-12-21 09:49:22,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 09:49:22,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 09:49:22,292 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 09:49:22,295 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 09:49:22,837 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 09:49:22,871 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 09:49:22,872 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 09:49:22,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:49:22 BoogieIcfgContainer [2023-12-21 09:49:22,872 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 09:49:22,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 09:49:22,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 09:49:22,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 09:49:22,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:49:21" (1/3) ... [2023-12-21 09:49:22,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfd764a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:49:22, skipping insertion in model container [2023-12-21 09:49:22,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:49:21" (2/3) ... [2023-12-21 09:49:22,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfd764a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:49:22, skipping insertion in model container [2023-12-21 09:49:22,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:49:22" (3/3) ... [2023-12-21 09:49:22,877 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product29.cil.c [2023-12-21 09:49:22,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 09:49:22,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 09:49:22,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 09:49:22,943 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@639755b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 09:49:22,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 09:49:22,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 393 states, 294 states have (on average 1.598639455782313) internal successors, (470), 301 states have internal predecessors, (470), 68 states have call successors, (68), 29 states have call predecessors, (68), 29 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-21 09:49:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 09:49:22,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:22,971 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:22,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:22,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:22,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1396361824, now seen corresponding path program 1 times [2023-12-21 09:49:22,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:22,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323700311] [2023-12-21 09:49:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:22,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:49:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:49:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:49:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 09:49:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 09:49:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:49:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:49:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:49:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:49:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:49:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:49:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:49:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:49:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:49:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 09:49:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 09:49:23,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:23,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323700311] [2023-12-21 09:49:23,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323700311] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:49:23,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939230811] [2023-12-21 09:49:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:23,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:49:23,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:49:23,670 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) [2023-12-21 09:49:23,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 09:49:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 09:49:24,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:49:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 09:49:24,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:49:24,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939230811] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:24,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:49:24,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-21 09:49:24,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128183475] [2023-12-21 09:49:24,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:24,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 09:49:24,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 09:49:24,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:49:24,064 INFO L87 Difference]: Start difference. First operand has 393 states, 294 states have (on average 1.598639455782313) internal successors, (470), 301 states have internal predecessors, (470), 68 states have call successors, (68), 29 states have call predecessors, (68), 29 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:24,172 INFO L93 Difference]: Finished difference Result 605 states and 918 transitions. [2023-12-21 09:49:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 09:49:24,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 132 [2023-12-21 09:49:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:24,183 INFO L225 Difference]: With dead ends: 605 [2023-12-21 09:49:24,183 INFO L226 Difference]: Without dead ends: 389 [2023-12-21 09:49:24,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:49:24,194 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:24,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 587 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:49:24,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-21 09:49:24,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2023-12-21 09:49:24,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 292 states have (on average 1.5856164383561644) internal successors, (463), 297 states have internal predecessors, (463), 68 states have call successors, (68), 29 states have call predecessors, (68), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-21 09:49:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 596 transitions. [2023-12-21 09:49:24,241 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 596 transitions. Word has length 132 [2023-12-21 09:49:24,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:24,242 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 596 transitions. [2023-12-21 09:49:24,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 596 transitions. [2023-12-21 09:49:24,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 09:49:24,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:24,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:24,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 09:49:24,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 09:49:24,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:24,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash -517583871, now seen corresponding path program 1 times [2023-12-21 09:49:24,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:24,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778385186] [2023-12-21 09:49:24,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:24,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:49:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:49:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:49:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 09:49:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 09:49:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:49:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:49:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:49:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:49:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:49:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:49:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:49:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:49:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 09:49:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 09:49:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 09:49:24,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:24,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778385186] [2023-12-21 09:49:24,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778385186] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:49:24,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427397913] [2023-12-21 09:49:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:24,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:49:24,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:49:24,684 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) [2023-12-21 09:49:24,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 09:49:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:24,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 1185 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 09:49:24,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:49:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 09:49:24,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:49:24,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427397913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:24,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:49:24,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:49:24,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976909109] [2023-12-21 09:49:24,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:24,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:49:24,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:24,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:49:24,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:49:24,954 INFO L87 Difference]: Start difference. First operand 389 states and 596 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:24,987 INFO L93 Difference]: Finished difference Result 600 states and 898 transitions. [2023-12-21 09:49:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:49:24,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2023-12-21 09:49:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:24,990 INFO L225 Difference]: With dead ends: 600 [2023-12-21 09:49:24,990 INFO L226 Difference]: Without dead ends: 391 [2023-12-21 09:49:24,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:49:24,993 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 0 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:24,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1167 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:49:24,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-21 09:49:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2023-12-21 09:49:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 294 states have (on average 1.5816326530612246) internal successors, (465), 299 states have internal predecessors, (465), 68 states have call successors, (68), 29 states have call predecessors, (68), 28 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-21 09:49:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 598 transitions. [2023-12-21 09:49:25,023 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 598 transitions. Word has length 133 [2023-12-21 09:49:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:25,024 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 598 transitions. [2023-12-21 09:49:25,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 598 transitions. [2023-12-21 09:49:25,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 09:49:25,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:25,033 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:25,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 09:49:25,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 09:49:25,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:25,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:25,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1970852547, now seen corresponding path program 1 times [2023-12-21 09:49:25,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:25,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412218350] [2023-12-21 09:49:25,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:25,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:49:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:49:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:49:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 09:49:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:49:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:49:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:49:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:49:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:49:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:49:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:49:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:49:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:49:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:49:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 09:49:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 09:49:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 09:49:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 09:49:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 09:49:25,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:25,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412218350] [2023-12-21 09:49:25,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412218350] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:49:25,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314946074] [2023-12-21 09:49:25,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:25,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:49:25,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:49:25,487 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) [2023-12-21 09:49:25,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 09:49:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:25,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:49:25,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:49:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-21 09:49:25,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:49:25,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314946074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:25,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:49:25,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:49:25,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721242644] [2023-12-21 09:49:25,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:25,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:49:25,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:49:25,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:49:25,807 INFO L87 Difference]: Start difference. First operand 391 states and 598 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:49:25,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:25,866 INFO L93 Difference]: Finished difference Result 826 states and 1281 transitions. [2023-12-21 09:49:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:49:25,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 156 [2023-12-21 09:49:25,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:25,869 INFO L225 Difference]: With dead ends: 826 [2023-12-21 09:49:25,869 INFO L226 Difference]: Without dead ends: 457 [2023-12-21 09:49:25,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:49:25,872 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 122 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:25,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1137 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:49:25,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-21 09:49:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 452. [2023-12-21 09:49:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 341 states have (on average 1.598240469208211) internal successors, (545), 346 states have internal predecessors, (545), 82 states have call successors, (82), 29 states have call predecessors, (82), 28 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-21 09:49:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 706 transitions. [2023-12-21 09:49:25,908 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 706 transitions. Word has length 156 [2023-12-21 09:49:25,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:25,908 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 706 transitions. [2023-12-21 09:49:25,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:49:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 706 transitions. [2023-12-21 09:49:25,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 09:49:25,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:25,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:25,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 09:49:26,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:49:26,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:26,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash 700204792, now seen corresponding path program 1 times [2023-12-21 09:49:26,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:26,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233401255] [2023-12-21 09:49:26,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:26,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:49:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:49:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:49:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 09:49:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 09:49:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:49:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:49:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:49:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:49:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:49:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:49:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:49:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:49:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:49:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 09:49:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 09:49:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 09:49:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 09:49:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 09:49:26,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:26,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233401255] [2023-12-21 09:49:26,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233401255] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:49:26,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400591050] [2023-12-21 09:49:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:26,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:49:26,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:49:26,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:49:26,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 09:49:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:26,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 09:49:26,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:49:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 09:49:26,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:49:26,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400591050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:26,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:49:26,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 09:49:26,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362624156] [2023-12-21 09:49:26,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:26,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:49:26,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:26,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:49:26,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:49:26,653 INFO L87 Difference]: Start difference. First operand 452 states and 706 transitions. Second operand has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-21 09:49:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:26,721 INFO L93 Difference]: Finished difference Result 899 states and 1406 transitions. [2023-12-21 09:49:26,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:49:26,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 157 [2023-12-21 09:49:26,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:26,724 INFO L225 Difference]: With dead ends: 899 [2023-12-21 09:49:26,724 INFO L226 Difference]: Without dead ends: 454 [2023-12-21 09:49:26,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:49:26,725 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 8 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:26,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2289 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:49:26,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-21 09:49:26,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2023-12-21 09:49:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 342 states have (on average 1.5964912280701755) internal successors, (546), 348 states have internal predecessors, (546), 82 states have call successors, (82), 29 states have call predecessors, (82), 29 states have return successors, (81), 78 states have call predecessors, (81), 79 states have call successors, (81) [2023-12-21 09:49:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 709 transitions. [2023-12-21 09:49:26,737 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 709 transitions. Word has length 157 [2023-12-21 09:49:26,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:26,738 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 709 transitions. [2023-12-21 09:49:26,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-21 09:49:26,738 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 709 transitions. [2023-12-21 09:49:26,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 09:49:26,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:26,740 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:26,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 09:49:26,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:49:26,947 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:26,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash 503702973, now seen corresponding path program 1 times [2023-12-21 09:49:26,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:26,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149256084] [2023-12-21 09:49:26,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:26,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 09:49:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 09:49:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 09:49:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:49:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:49:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:49:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:49:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:49:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:49:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:49:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:49:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 09:49:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:49:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 09:49:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 09:49:27,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:27,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149256084] [2023-12-21 09:49:27,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149256084] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:49:27,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584049690] [2023-12-21 09:49:27,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:27,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:49:27,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:49:27,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:49:27,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 09:49:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 09:49:27,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:49:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 09:49:27,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:49:27,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584049690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:27,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:49:27,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-21 09:49:27,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475045697] [2023-12-21 09:49:27,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:27,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:49:27,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:49:27,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:49:27,458 INFO L87 Difference]: Start difference. First operand 454 states and 709 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:49:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:27,535 INFO L93 Difference]: Finished difference Result 901 states and 1411 transitions. [2023-12-21 09:49:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:49:27,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 140 [2023-12-21 09:49:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:27,538 INFO L225 Difference]: With dead ends: 901 [2023-12-21 09:49:27,538 INFO L226 Difference]: Without dead ends: 456 [2023-12-21 09:49:27,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-21 09:49:27,540 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 8 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:27,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2275 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:49:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-21 09:49:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2023-12-21 09:49:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 343 states have (on average 1.5947521865889214) internal successors, (547), 350 states have internal predecessors, (547), 82 states have call successors, (82), 29 states have call predecessors, (82), 30 states have return successors, (86), 78 states have call predecessors, (86), 79 states have call successors, (86) [2023-12-21 09:49:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 715 transitions. [2023-12-21 09:49:27,552 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 715 transitions. Word has length 140 [2023-12-21 09:49:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:27,552 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 715 transitions. [2023-12-21 09:49:27,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:49:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 715 transitions. [2023-12-21 09:49:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 09:49:27,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:27,554 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:27,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 09:49:27,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:49:27,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:27,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:27,762 INFO L85 PathProgramCache]: Analyzing trace with hash 696009771, now seen corresponding path program 1 times [2023-12-21 09:49:27,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:27,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131028675] [2023-12-21 09:49:27,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:27,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 09:49:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 09:49:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:49:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:49:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:49:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:49:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:49:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:49:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:49:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:49:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:49:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 09:49:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 09:49:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 09:49:27,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:27,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131028675] [2023-12-21 09:49:27,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131028675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:27,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:27,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:49:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654281339] [2023-12-21 09:49:27,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:27,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:49:27,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:49:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:49:27,917 INFO L87 Difference]: Start difference. First operand 456 states and 715 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:49:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:29,613 INFO L93 Difference]: Finished difference Result 989 states and 1574 transitions. [2023-12-21 09:49:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:49:29,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 141 [2023-12-21 09:49:29,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:29,620 INFO L225 Difference]: With dead ends: 989 [2023-12-21 09:49:29,620 INFO L226 Difference]: Without dead ends: 552 [2023-12-21 09:49:29,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:49:29,621 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 1323 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:29,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 1146 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 09:49:29,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-12-21 09:49:29,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 456. [2023-12-21 09:49:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 343 states have (on average 1.5947521865889214) internal successors, (547), 350 states have internal predecessors, (547), 82 states have call successors, (82), 29 states have call predecessors, (82), 30 states have return successors, (85), 78 states have call predecessors, (85), 79 states have call successors, (85) [2023-12-21 09:49:29,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 714 transitions. [2023-12-21 09:49:29,646 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 714 transitions. Word has length 141 [2023-12-21 09:49:29,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:29,647 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 714 transitions. [2023-12-21 09:49:29,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-21 09:49:29,647 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 714 transitions. [2023-12-21 09:49:29,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 09:49:29,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:29,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 09:49:29,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 09:49:29,649 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:29,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:29,649 INFO L85 PathProgramCache]: Analyzing trace with hash -425649064, now seen corresponding path program 1 times [2023-12-21 09:49:29,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:29,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627781595] [2023-12-21 09:49:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:29,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 09:49:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 09:49:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:49:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:49:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:49:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:49:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:49:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:49:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:49:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:49:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 09:49:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 09:49:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 09:49:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 09:49:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 09:49:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 09:49:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 09:49:29,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:29,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627781595] [2023-12-21 09:49:29,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627781595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:29,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:29,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:49:29,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124901237] [2023-12-21 09:49:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:29,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:49:29,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:29,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:49:29,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:49:29,790 INFO L87 Difference]: Start difference. First operand 456 states and 714 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-21 09:49:31,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:31,284 INFO L93 Difference]: Finished difference Result 991 states and 1577 transitions. [2023-12-21 09:49:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:49:31,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 160 [2023-12-21 09:49:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:31,287 INFO L225 Difference]: With dead ends: 991 [2023-12-21 09:49:31,287 INFO L226 Difference]: Without dead ends: 554 [2023-12-21 09:49:31,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:49:31,289 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 1318 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 2571 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:31,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 1146 Invalid, 3049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 2571 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:49:31,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-21 09:49:31,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 458. [2023-12-21 09:49:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 344 states have (on average 1.5930232558139534) internal successors, (548), 352 states have internal predecessors, (548), 82 states have call successors, (82), 29 states have call predecessors, (82), 31 states have return successors, (87), 78 states have call predecessors, (87), 79 states have call successors, (87) [2023-12-21 09:49:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 717 transitions. [2023-12-21 09:49:31,313 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 717 transitions. Word has length 160 [2023-12-21 09:49:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:31,313 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 717 transitions. [2023-12-21 09:49:31,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-21 09:49:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 717 transitions. [2023-12-21 09:49:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 09:49:31,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:31,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:31,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 09:49:31,315 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:31,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1334159349, now seen corresponding path program 1 times [2023-12-21 09:49:31,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:31,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766487523] [2023-12-21 09:49:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:31,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:49:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 09:49:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:49:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:49:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:49:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:49:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:49:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:49:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:49:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:49:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:49:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 09:49:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 09:49:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 09:49:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 09:49:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:49:31,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766487523] [2023-12-21 09:49:31,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766487523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:31,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:31,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:49:31,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289910899] [2023-12-21 09:49:31,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:31,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:49:31,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:31,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:49:31,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:49:31,480 INFO L87 Difference]: Start difference. First operand 458 states and 717 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-21 09:49:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:33,523 INFO L93 Difference]: Finished difference Result 989 states and 1572 transitions. [2023-12-21 09:49:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:49:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 161 [2023-12-21 09:49:33,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:33,527 INFO L225 Difference]: With dead ends: 989 [2023-12-21 09:49:33,527 INFO L226 Difference]: Without dead ends: 554 [2023-12-21 09:49:33,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 09:49:33,531 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1331 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 4318 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 4795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 4318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:33,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 1587 Invalid, 4795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 4318 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 09:49:33,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2023-12-21 09:49:33,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 458. [2023-12-21 09:49:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 344 states have (on average 1.5930232558139534) internal successors, (548), 352 states have internal predecessors, (548), 82 states have call successors, (82), 29 states have call predecessors, (82), 31 states have return successors, (86), 78 states have call predecessors, (86), 79 states have call successors, (86) [2023-12-21 09:49:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 716 transitions. [2023-12-21 09:49:33,554 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 716 transitions. Word has length 161 [2023-12-21 09:49:33,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:33,554 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 716 transitions. [2023-12-21 09:49:33,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-12-21 09:49:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 716 transitions. [2023-12-21 09:49:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 09:49:33,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:33,556 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:33,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 09:49:33,557 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:33,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:33,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1828919710, now seen corresponding path program 1 times [2023-12-21 09:49:33,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:33,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20828929] [2023-12-21 09:49:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:33,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 09:49:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 09:49:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:49:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:49:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:49:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:49:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:49:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:49:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:49:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:49:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 09:49:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 09:49:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 09:49:33,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:33,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20828929] [2023-12-21 09:49:33,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20828929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:33,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:33,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:49:33,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902749200] [2023-12-21 09:49:33,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:33,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:49:33,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:33,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:49:33,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:49:33,744 INFO L87 Difference]: Start difference. First operand 458 states and 716 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-21 09:49:36,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:36,078 INFO L93 Difference]: Finished difference Result 991 states and 1578 transitions. [2023-12-21 09:49:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:49:36,079 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 144 [2023-12-21 09:49:36,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:36,082 INFO L225 Difference]: With dead ends: 991 [2023-12-21 09:49:36,082 INFO L226 Difference]: Without dead ends: 556 [2023-12-21 09:49:36,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 09:49:36,085 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1326 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 4386 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 4856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 4386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:36,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1587 Invalid, 4856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 4386 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 09:49:36,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2023-12-21 09:49:36,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 460. [2023-12-21 09:49:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 345 states have (on average 1.5913043478260869) internal successors, (549), 354 states have internal predecessors, (549), 82 states have call successors, (82), 29 states have call predecessors, (82), 32 states have return successors, (91), 78 states have call predecessors, (91), 79 states have call successors, (91) [2023-12-21 09:49:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 722 transitions. [2023-12-21 09:49:36,109 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 722 transitions. Word has length 144 [2023-12-21 09:49:36,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:36,110 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 722 transitions. [2023-12-21 09:49:36,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-21 09:49:36,110 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 722 transitions. [2023-12-21 09:49:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 09:49:36,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:36,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:36,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 09:49:36,112 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:36,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:36,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2068335179, now seen corresponding path program 1 times [2023-12-21 09:49:36,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:36,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018929508] [2023-12-21 09:49:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:36,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:49:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 09:49:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:49:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:49:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:49:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:49:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:49:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:49:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:49:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:49:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 09:49:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 09:49:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:49:36,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:36,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018929508] [2023-12-21 09:49:36,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018929508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:49:36,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472844165] [2023-12-21 09:49:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:36,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:49:36,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:49:36,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:49:36,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 09:49:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:36,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:49:36,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:49:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:49:36,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:49:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:49:36,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472844165] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:49:36,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:49:36,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-12-21 09:49:36,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047815859] [2023-12-21 09:49:36,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:49:36,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 09:49:36,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:36,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 09:49:36,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-21 09:49:36,589 INFO L87 Difference]: Start difference. First operand 460 states and 722 transitions. Second operand has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-21 09:49:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:38,384 INFO L93 Difference]: Finished difference Result 1165 states and 1934 transitions. [2023-12-21 09:49:38,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 09:49:38,385 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 145 [2023-12-21 09:49:38,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:38,388 INFO L225 Difference]: With dead ends: 1165 [2023-12-21 09:49:38,388 INFO L226 Difference]: Without dead ends: 956 [2023-12-21 09:49:38,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:49:38,390 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1786 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:38,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 1390 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 09:49:38,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-12-21 09:49:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 845. [2023-12-21 09:49:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 651 states have (on average 1.6497695852534562) internal successors, (1074), 660 states have internal predecessors, (1074), 161 states have call successors, (161), 29 states have call predecessors, (161), 32 states have return successors, (180), 157 states have call predecessors, (180), 158 states have call successors, (180) [2023-12-21 09:49:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1415 transitions. [2023-12-21 09:49:38,423 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1415 transitions. Word has length 145 [2023-12-21 09:49:38,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:38,424 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1415 transitions. [2023-12-21 09:49:38,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 7 states have internal predecessors, (123), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-21 09:49:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1415 transitions. [2023-12-21 09:49:38,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 09:49:38,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:38,427 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:38,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 09:49:38,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:49:38,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:38,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:38,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1120285870, now seen corresponding path program 1 times [2023-12-21 09:49:38,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:38,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123622116] [2023-12-21 09:49:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:38,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:49:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:49:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:49:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:49:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:49:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:49:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:49:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:49:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:49:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 09:49:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 09:49:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 09:49:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:49:38,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:38,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123622116] [2023-12-21 09:49:38,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123622116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:38,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:38,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:49:38,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977268974] [2023-12-21 09:49:38,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:38,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:49:38,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:38,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:49:38,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:49:38,723 INFO L87 Difference]: Start difference. First operand 845 states and 1415 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:39,905 INFO L93 Difference]: Finished difference Result 2113 states and 3629 transitions. [2023-12-21 09:49:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:49:39,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 151 [2023-12-21 09:49:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:39,912 INFO L225 Difference]: With dead ends: 2113 [2023-12-21 09:49:39,912 INFO L226 Difference]: Without dead ends: 1328 [2023-12-21 09:49:39,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:49:39,915 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1437 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:39,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 893 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:49:39,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2023-12-21 09:49:39,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1227. [2023-12-21 09:49:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 954 states have (on average 1.6624737945492662) internal successors, (1586), 963 states have internal predecessors, (1586), 240 states have call successors, (240), 29 states have call predecessors, (240), 32 states have return successors, (269), 236 states have call predecessors, (269), 237 states have call successors, (269) [2023-12-21 09:49:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2095 transitions. [2023-12-21 09:49:39,952 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2095 transitions. Word has length 151 [2023-12-21 09:49:39,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:39,952 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 2095 transitions. [2023-12-21 09:49:39,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2095 transitions. [2023-12-21 09:49:39,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-21 09:49:39,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:39,958 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:39,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 09:49:39,958 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:39,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash -348234047, now seen corresponding path program 1 times [2023-12-21 09:49:39,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:39,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885569815] [2023-12-21 09:49:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:39,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:49:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:49:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:49:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:49:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:49:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:49:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:49:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:49:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:49:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 09:49:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 09:49:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 09:49:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 09:49:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 09:49:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 09:49:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 09:49:40,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:40,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885569815] [2023-12-21 09:49:40,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885569815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:40,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:40,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:49:40,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419339971] [2023-12-21 09:49:40,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:40,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:49:40,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:40,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:49:40,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:49:40,051 INFO L87 Difference]: Start difference. First operand 1227 states and 2095 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:49:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:41,353 INFO L93 Difference]: Finished difference Result 3044 states and 5285 transitions. [2023-12-21 09:49:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:49:41,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 170 [2023-12-21 09:49:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:41,373 INFO L225 Difference]: With dead ends: 3044 [2023-12-21 09:49:41,376 INFO L226 Difference]: Without dead ends: 1927 [2023-12-21 09:49:41,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:49:41,396 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1435 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:41,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 852 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:49:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2023-12-21 09:49:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1826. [2023-12-21 09:49:41,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1434 states have (on average 1.6708507670850767) internal successors, (2396), 1443 states have internal predecessors, (2396), 359 states have call successors, (359), 29 states have call predecessors, (359), 32 states have return successors, (388), 355 states have call predecessors, (388), 356 states have call successors, (388) [2023-12-21 09:49:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 3143 transitions. [2023-12-21 09:49:41,451 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 3143 transitions. Word has length 170 [2023-12-21 09:49:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:41,451 INFO L495 AbstractCegarLoop]: Abstraction has 1826 states and 3143 transitions. [2023-12-21 09:49:41,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:49:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 3143 transitions. [2023-12-21 09:49:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 09:49:41,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:41,459 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:41,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 09:49:41,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:41,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:41,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1548356724, now seen corresponding path program 1 times [2023-12-21 09:49:41,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:41,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820694291] [2023-12-21 09:49:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:41,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:49:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:49:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:49:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:49:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:49:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:49:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:49:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:49:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 09:49:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 09:49:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 09:49:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 09:49:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:49:41,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:41,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820694291] [2023-12-21 09:49:41,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820694291] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:41,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:41,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:49:41,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090824829] [2023-12-21 09:49:41,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:41,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:49:41,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:41,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:49:41,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:49:41,555 INFO L87 Difference]: Start difference. First operand 1826 states and 3143 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:42,931 INFO L93 Difference]: Finished difference Result 4440 states and 7790 transitions. [2023-12-21 09:49:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:49:42,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2023-12-21 09:49:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:42,944 INFO L225 Difference]: With dead ends: 4440 [2023-12-21 09:49:42,944 INFO L226 Difference]: Without dead ends: 2844 [2023-12-21 09:49:42,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:49:42,948 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 1436 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:42,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 841 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 09:49:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2023-12-21 09:49:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2743. [2023-12-21 09:49:43,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 2189 states have (on average 1.6779351301964367) internal successors, (3673), 2198 states have internal predecessors, (3673), 521 states have call successors, (521), 29 states have call predecessors, (521), 32 states have return successors, (566), 517 states have call predecessors, (566), 518 states have call successors, (566) [2023-12-21 09:49:43,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 4760 transitions. [2023-12-21 09:49:43,044 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 4760 transitions. Word has length 153 [2023-12-21 09:49:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:43,044 INFO L495 AbstractCegarLoop]: Abstraction has 2743 states and 4760 transitions. [2023-12-21 09:49:43,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:43,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 4760 transitions. [2023-12-21 09:49:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 09:49:43,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:43,058 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:43,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 09:49:43,058 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:43,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:43,058 INFO L85 PathProgramCache]: Analyzing trace with hash 980485410, now seen corresponding path program 1 times [2023-12-21 09:49:43,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:43,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179458380] [2023-12-21 09:49:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:43,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:49:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:49:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:49:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:49:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:49:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:49:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:49:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:49:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:49:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 09:49:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 09:49:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 09:49:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 09:49:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 09:49:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 09:49:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 09:49:43,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:43,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179458380] [2023-12-21 09:49:43,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179458380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:43,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:43,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:49:43,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820926434] [2023-12-21 09:49:43,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:43,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:49:43,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:49:43,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:49:43,147 INFO L87 Difference]: Start difference. First operand 2743 states and 4760 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:49:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:44,274 INFO L93 Difference]: Finished difference Result 6640 states and 11750 transitions. [2023-12-21 09:49:44,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:49:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 172 [2023-12-21 09:49:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:44,333 INFO L225 Difference]: With dead ends: 6640 [2023-12-21 09:49:44,333 INFO L226 Difference]: Without dead ends: 4324 [2023-12-21 09:49:44,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:49:44,339 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 1432 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:44,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 841 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:49:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4324 states. [2023-12-21 09:49:44,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4324 to 4223. [2023-12-21 09:49:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4223 states, 3424 states have (on average 1.6831191588785046) internal successors, (5763), 3433 states have internal predecessors, (5763), 766 states have call successors, (766), 29 states have call predecessors, (766), 32 states have return successors, (837), 762 states have call predecessors, (837), 763 states have call successors, (837) [2023-12-21 09:49:44,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 7366 transitions. [2023-12-21 09:49:44,459 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 7366 transitions. Word has length 172 [2023-12-21 09:49:44,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:44,459 INFO L495 AbstractCegarLoop]: Abstraction has 4223 states and 7366 transitions. [2023-12-21 09:49:44,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:49:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 7366 transitions. [2023-12-21 09:49:44,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 09:49:44,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:44,478 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:44,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 09:49:44,478 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:44,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1040701008, now seen corresponding path program 1 times [2023-12-21 09:49:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:44,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110369027] [2023-12-21 09:49:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:44,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:49:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:49:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:49:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:49:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:49:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:49:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:49:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:49:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:49:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 09:49:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 09:49:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 09:49:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:49:44,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:44,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110369027] [2023-12-21 09:49:44,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110369027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:44,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:44,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:49:44,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774577874] [2023-12-21 09:49:44,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:44,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:49:44,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:49:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:49:44,559 INFO L87 Difference]: Start difference. First operand 4223 states and 7366 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:45,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:45,981 INFO L93 Difference]: Finished difference Result 10569 states and 18775 transitions. [2023-12-21 09:49:45,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:49:45,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 155 [2023-12-21 09:49:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:46,025 INFO L225 Difference]: With dead ends: 10569 [2023-12-21 09:49:46,025 INFO L226 Difference]: Without dead ends: 6996 [2023-12-21 09:49:46,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:49:46,036 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1427 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:46,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 874 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:49:46,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6996 states. [2023-12-21 09:49:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6996 to 6895. [2023-12-21 09:49:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6895 states, 5603 states have (on average 1.6789220060681778) internal successors, (9407), 5612 states have internal predecessors, (9407), 1259 states have call successors, (1259), 29 states have call predecessors, (1259), 32 states have return successors, (1374), 1255 states have call predecessors, (1374), 1256 states have call successors, (1374) [2023-12-21 09:49:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6895 states to 6895 states and 12040 transitions. [2023-12-21 09:49:46,290 INFO L78 Accepts]: Start accepts. Automaton has 6895 states and 12040 transitions. Word has length 155 [2023-12-21 09:49:46,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:46,290 INFO L495 AbstractCegarLoop]: Abstraction has 6895 states and 12040 transitions. [2023-12-21 09:49:46,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:46,291 INFO L276 IsEmpty]: Start isEmpty. Operand 6895 states and 12040 transitions. [2023-12-21 09:49:46,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-21 09:49:46,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:46,314 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:46,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 09:49:46,314 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:46,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:46,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1563914982, now seen corresponding path program 1 times [2023-12-21 09:49:46,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:46,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007829121] [2023-12-21 09:49:46,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:46,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:49:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:49:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:49:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:49:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:49:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:49:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:49:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:49:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:49:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 09:49:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 09:49:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 09:49:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 09:49:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-21 09:49:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 09:49:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 09:49:46,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:46,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007829121] [2023-12-21 09:49:46,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007829121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:46,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:46,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:49:46,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284043067] [2023-12-21 09:49:46,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:46,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:49:46,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:46,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:49:46,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:49:46,410 INFO L87 Difference]: Start difference. First operand 6895 states and 12040 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:49:47,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:47,883 INFO L93 Difference]: Finished difference Result 17548 states and 31186 transitions. [2023-12-21 09:49:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:49:47,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 174 [2023-12-21 09:49:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:47,925 INFO L225 Difference]: With dead ends: 17548 [2023-12-21 09:49:47,925 INFO L226 Difference]: Without dead ends: 11669 [2023-12-21 09:49:47,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:49:47,946 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1428 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:47,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 849 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:49:47,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11669 states. [2023-12-21 09:49:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11669 to 11568. [2023-12-21 09:49:48,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11568 states, 9454 states have (on average 1.6790776390945632) internal successors, (15874), 9463 states have internal predecessors, (15874), 2081 states have call successors, (2081), 29 states have call predecessors, (2081), 32 states have return successors, (2274), 2077 states have call predecessors, (2274), 2078 states have call successors, (2274) [2023-12-21 09:49:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11568 states to 11568 states and 20229 transitions. [2023-12-21 09:49:48,410 INFO L78 Accepts]: Start accepts. Automaton has 11568 states and 20229 transitions. Word has length 174 [2023-12-21 09:49:48,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:48,410 INFO L495 AbstractCegarLoop]: Abstraction has 11568 states and 20229 transitions. [2023-12-21 09:49:48,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:49:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand 11568 states and 20229 transitions. [2023-12-21 09:49:48,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 09:49:48,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:48,442 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:48,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 09:49:48,443 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:48,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1566159694, now seen corresponding path program 1 times [2023-12-21 09:49:48,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:48,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027601051] [2023-12-21 09:49:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:48,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:49:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:49:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:49:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:49:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:49:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:49:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:49:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:49:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 09:49:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 09:49:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 09:49:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 09:49:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:49:48,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:48,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027601051] [2023-12-21 09:49:48,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027601051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:48,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:48,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:49:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543701214] [2023-12-21 09:49:48,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:48,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:49:48,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:49:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:49:48,516 INFO L87 Difference]: Start difference. First operand 11568 states and 20229 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:50,000 INFO L93 Difference]: Finished difference Result 27674 states and 49004 transitions. [2023-12-21 09:49:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:49:50,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2023-12-21 09:49:50,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:50,053 INFO L225 Difference]: With dead ends: 27674 [2023-12-21 09:49:50,053 INFO L226 Difference]: Without dead ends: 18053 [2023-12-21 09:49:50,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:49:50,074 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 1428 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:50,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 816 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:49:50,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2023-12-21 09:49:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 17952. [2023-12-21 09:49:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17952 states, 14635 states have (on average 1.6556884181756064) internal successors, (24231), 14644 states have internal predecessors, (24231), 3284 states have call successors, (3284), 29 states have call predecessors, (3284), 32 states have return successors, (3621), 3280 states have call predecessors, (3621), 3281 states have call successors, (3621) [2023-12-21 09:49:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17952 states to 17952 states and 31136 transitions. [2023-12-21 09:49:50,694 INFO L78 Accepts]: Start accepts. Automaton has 17952 states and 31136 transitions. Word has length 157 [2023-12-21 09:49:50,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:50,695 INFO L495 AbstractCegarLoop]: Abstraction has 17952 states and 31136 transitions. [2023-12-21 09:49:50,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:50,695 INFO L276 IsEmpty]: Start isEmpty. Operand 17952 states and 31136 transitions. [2023-12-21 09:49:50,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-21 09:49:50,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:50,734 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:50,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 09:49:50,735 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:50,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:50,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2050360551, now seen corresponding path program 1 times [2023-12-21 09:49:50,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:50,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371325761] [2023-12-21 09:49:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:50,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:49:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:49:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:49:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:49:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:49:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:49:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:49:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:49:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 09:49:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 09:49:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 09:49:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 09:49:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 09:49:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 09:49:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 09:49:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 09:49:50,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:50,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371325761] [2023-12-21 09:49:50,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371325761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:50,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:50,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:49:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597757637] [2023-12-21 09:49:50,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:50,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:49:50,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:50,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:49:50,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:49:50,835 INFO L87 Difference]: Start difference. First operand 17952 states and 31136 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:49:52,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:52,742 INFO L93 Difference]: Finished difference Result 47499 states and 83911 transitions. [2023-12-21 09:49:52,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:49:52,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2023-12-21 09:49:52,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:52,844 INFO L225 Difference]: With dead ends: 47499 [2023-12-21 09:49:52,844 INFO L226 Difference]: Without dead ends: 32086 [2023-12-21 09:49:52,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:49:52,880 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1420 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:52,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 848 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:49:52,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32086 states. [2023-12-21 09:49:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32086 to 31985. [2023-12-21 09:49:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31985 states, 26218 states have (on average 1.6528720726218629) internal successors, (43335), 26227 states have internal predecessors, (43335), 5734 states have call successors, (5734), 29 states have call predecessors, (5734), 32 states have return successors, (6345), 5730 states have call predecessors, (6345), 5731 states have call successors, (6345) [2023-12-21 09:49:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31985 states to 31985 states and 55414 transitions. [2023-12-21 09:49:54,026 INFO L78 Accepts]: Start accepts. Automaton has 31985 states and 55414 transitions. Word has length 176 [2023-12-21 09:49:54,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:54,027 INFO L495 AbstractCegarLoop]: Abstraction has 31985 states and 55414 transitions. [2023-12-21 09:49:54,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:49:54,027 INFO L276 IsEmpty]: Start isEmpty. Operand 31985 states and 55414 transitions. [2023-12-21 09:49:54,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 09:49:54,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:54,085 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:54,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 09:49:54,086 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:54,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:54,086 INFO L85 PathProgramCache]: Analyzing trace with hash 408768716, now seen corresponding path program 1 times [2023-12-21 09:49:54,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:54,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66716099] [2023-12-21 09:49:54,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:54,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:49:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:49:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:49:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:49:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:49:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:49:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:49:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 09:49:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 09:49:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 09:49:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 09:49:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 09:49:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 09:49:54,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:54,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66716099] [2023-12-21 09:49:54,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66716099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:54,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:54,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:49:54,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837237902] [2023-12-21 09:49:54,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:54,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:49:54,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:54,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:49:54,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:49:54,166 INFO L87 Difference]: Start difference. First operand 31985 states and 55414 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:49:56,629 INFO L93 Difference]: Finished difference Result 87221 states and 153370 transitions. [2023-12-21 09:49:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:49:56,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2023-12-21 09:49:56,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:49:56,999 INFO L225 Difference]: With dead ends: 87221 [2023-12-21 09:49:57,000 INFO L226 Difference]: Without dead ends: 58634 [2023-12-21 09:49:57,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:49:57,051 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 1424 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:49:57,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 854 Invalid, 1953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:49:57,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58634 states. [2023-12-21 09:49:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58634 to 58533. [2023-12-21 09:49:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58533 states, 48253 states have (on average 1.648995917352289) internal successors, (79569), 48262 states have internal predecessors, (79569), 10247 states have call successors, (10247), 29 states have call predecessors, (10247), 32 states have return successors, (11390), 10243 states have call predecessors, (11390), 10244 states have call successors, (11390) [2023-12-21 09:49:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58533 states to 58533 states and 101206 transitions. [2023-12-21 09:49:59,106 INFO L78 Accepts]: Start accepts. Automaton has 58533 states and 101206 transitions. Word has length 159 [2023-12-21 09:49:59,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:49:59,107 INFO L495 AbstractCegarLoop]: Abstraction has 58533 states and 101206 transitions. [2023-12-21 09:49:59,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 09:49:59,107 INFO L276 IsEmpty]: Start isEmpty. Operand 58533 states and 101206 transitions. [2023-12-21 09:49:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-21 09:49:59,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:49:59,199 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:49:59,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 09:49:59,199 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:49:59,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:49:59,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1028814983, now seen corresponding path program 1 times [2023-12-21 09:49:59,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:49:59,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278041027] [2023-12-21 09:49:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:49:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:49:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:49:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:49:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:49:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:49:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:49:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:49:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:49:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:49:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:49:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:49:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:49:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:49:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:49:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:49:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:49:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 09:49:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 09:49:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 09:49:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 09:49:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 09:49:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 09:49:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:49:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 09:49:59,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:49:59,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278041027] [2023-12-21 09:49:59,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278041027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:49:59,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:49:59,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:49:59,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218513956] [2023-12-21 09:49:59,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:49:59,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:49:59,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:49:59,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:49:59,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:49:59,300 INFO L87 Difference]: Start difference. First operand 58533 states and 101206 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:50:02,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:50:02,930 INFO L93 Difference]: Finished difference Result 109545 states and 193181 transitions. [2023-12-21 09:50:02,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:50:02,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2023-12-21 09:50:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:50:03,339 INFO L225 Difference]: With dead ends: 109545 [2023-12-21 09:50:03,340 INFO L226 Difference]: Without dead ends: 109336 [2023-12-21 09:50:03,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:50:03,381 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1419 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 09:50:03,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 844 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 09:50:03,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109336 states. [2023-12-21 09:50:06,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109336 to 109235. [2023-12-21 09:50:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109235 states, 90587 states have (on average 1.6439444953470144) internal successors, (148920), 90596 states have internal predecessors, (148920), 18615 states have call successors, (18615), 29 states have call predecessors, (18615), 32 states have return successors, (20804), 18611 states have call predecessors, (20804), 18612 states have call successors, (20804) [2023-12-21 09:50:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109235 states to 109235 states and 188339 transitions. [2023-12-21 09:50:07,249 INFO L78 Accepts]: Start accepts. Automaton has 109235 states and 188339 transitions. Word has length 178 [2023-12-21 09:50:07,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:50:07,250 INFO L495 AbstractCegarLoop]: Abstraction has 109235 states and 188339 transitions. [2023-12-21 09:50:07,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (25), 6 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:50:07,250 INFO L276 IsEmpty]: Start isEmpty. Operand 109235 states and 188339 transitions. [2023-12-21 09:50:07,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-21 09:50:07,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:50:07,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:50:07,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 09:50:07,363 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:50:07,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:50:07,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2095893552, now seen corresponding path program 1 times [2023-12-21 09:50:07,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:50:07,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567670256] [2023-12-21 09:50:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:50:07,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:50:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:50:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:50:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:50:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:50:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:50:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:50:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:50:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:50:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:50:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:50:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:50:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:50:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:50:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:50:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 09:50:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 09:50:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 09:50:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 09:50:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 09:50:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 09:50:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 09:50:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 09:50:07,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:50:07,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567670256] [2023-12-21 09:50:07,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567670256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:50:07,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:50:07,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 09:50:07,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876647935] [2023-12-21 09:50:07,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:50:07,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 09:50:07,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:50:07,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 09:50:07,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:50:07,530 INFO L87 Difference]: Start difference. First operand 109235 states and 188339 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:50:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:50:13,522 INFO L93 Difference]: Finished difference Result 210509 states and 370740 transitions. [2023-12-21 09:50:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 09:50:13,523 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2023-12-21 09:50:13,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:50:14,682 INFO L225 Difference]: With dead ends: 210509 [2023-12-21 09:50:14,683 INFO L226 Difference]: Without dead ends: 210307 [2023-12-21 09:50:14,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=208, Invalid=548, Unknown=0, NotChecked=0, Total=756 [2023-12-21 09:50:14,764 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 2958 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 3339 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2975 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 4337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 3339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:50:14,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2975 Valid, 1512 Invalid, 4337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 3339 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 09:50:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210307 states. [2023-12-21 09:50:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210307 to 210103. [2023-12-21 09:50:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210103 states, 174312 states have (on average 1.6473277800725137) internal successors, (287149), 174269 states have internal predecessors, (287149), 35730 states have call successors, (35730), 56 states have call predecessors, (35730), 60 states have return successors, (39011), 35781 states have call predecessors, (39011), 35726 states have call successors, (39011) [2023-12-21 09:50:22,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210103 states to 210103 states and 361890 transitions. [2023-12-21 09:50:22,219 INFO L78 Accepts]: Start accepts. Automaton has 210103 states and 361890 transitions. Word has length 179 [2023-12-21 09:50:22,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:50:22,220 INFO L495 AbstractCegarLoop]: Abstraction has 210103 states and 361890 transitions. [2023-12-21 09:50:22,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 5 states have internal predecessors, (104), 2 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-12-21 09:50:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 210103 states and 361890 transitions. [2023-12-21 09:50:22,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-21 09:50:22,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:50:22,368 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:50:22,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 09:50:22,369 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:50:22,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:50:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1427858454, now seen corresponding path program 1 times [2023-12-21 09:50:22,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:50:22,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616834619] [2023-12-21 09:50:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:50:22,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:50:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:50:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:50:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:50:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:50:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:50:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:50:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:50:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:50:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:50:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:50:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:50:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:50:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:50:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:50:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 09:50:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 09:50:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 09:50:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 09:50:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 09:50:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 09:50:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 09:50:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-21 09:50:22,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:50:22,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616834619] [2023-12-21 09:50:22,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616834619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:50:22,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:50:22,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 09:50:22,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416215816] [2023-12-21 09:50:22,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:50:22,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 09:50:22,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:50:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 09:50:22,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-12-21 09:50:22,793 INFO L87 Difference]: Start difference. First operand 210103 states and 361890 transitions. Second operand has 14 states, 13 states have (on average 8.076923076923077) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-12-21 09:50:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:50:29,418 INFO L93 Difference]: Finished difference Result 210764 states and 369175 transitions. [2023-12-21 09:50:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 09:50:29,420 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.076923076923077) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 180 [2023-12-21 09:50:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:50:30,394 INFO L225 Difference]: With dead ends: 210764 [2023-12-21 09:50:30,394 INFO L226 Difference]: Without dead ends: 210344 [2023-12-21 09:50:30,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=286, Invalid=974, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 09:50:30,473 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1955 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 4980 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 5711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 4980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:50:30,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 1667 Invalid, 5711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 4980 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 09:50:30,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210344 states. [2023-12-21 09:50:36,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210344 to 210147. [2023-12-21 09:50:36,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210147 states, 174341 states have (on average 1.6472831978708393) internal successors, (287189), 174301 states have internal predecessors, (287189), 35743 states have call successors, (35743), 58 states have call predecessors, (35743), 62 states have return successors, (39022), 35791 states have call predecessors, (39022), 35735 states have call successors, (39022) [2023-12-21 09:50:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210147 states to 210147 states and 361954 transitions. [2023-12-21 09:50:38,075 INFO L78 Accepts]: Start accepts. Automaton has 210147 states and 361954 transitions. Word has length 180 [2023-12-21 09:50:38,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:50:38,076 INFO L495 AbstractCegarLoop]: Abstraction has 210147 states and 361954 transitions. [2023-12-21 09:50:38,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.076923076923077) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-12-21 09:50:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 210147 states and 361954 transitions. [2023-12-21 09:50:38,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 09:50:38,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:50:38,626 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:50:38,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 09:50:38,626 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:50:38,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:50:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash -969857781, now seen corresponding path program 1 times [2023-12-21 09:50:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:50:38,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506999089] [2023-12-21 09:50:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:50:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:50:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:50:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:50:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:50:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:50:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:50:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:50:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:50:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:50:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:50:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:50:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:50:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:50:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:50:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:50:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 09:50:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 09:50:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 09:50:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 09:50:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 09:50:38,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:50:38,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506999089] [2023-12-21 09:50:38,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506999089] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:50:38,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181562495] [2023-12-21 09:50:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:50:38,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:50:38,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:50:38,977 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:50:39,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 09:50:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:50:39,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 09:50:39,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:50:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 09:50:39,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:50:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-21 09:50:39,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181562495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:50:39,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:50:39,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2023-12-21 09:50:39,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192627569] [2023-12-21 09:50:39,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:50:39,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 09:50:39,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:50:39,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 09:50:39,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2023-12-21 09:50:39,750 INFO L87 Difference]: Start difference. First operand 210147 states and 361954 transitions. Second operand has 32 states, 30 states have (on average 8.133333333333333) internal successors, (244), 24 states have internal predecessors, (244), 9 states have call successors, (56), 12 states have call predecessors, (56), 12 states have return successors, (47), 11 states have call predecessors, (47), 9 states have call successors, (47) [2023-12-21 09:51:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:51:28,161 INFO L93 Difference]: Finished difference Result 1257460 states and 2265990 transitions. [2023-12-21 09:51:28,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-12-21 09:51:28,186 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.133333333333333) internal successors, (244), 24 states have internal predecessors, (244), 9 states have call successors, (56), 12 states have call predecessors, (56), 12 states have return successors, (47), 11 states have call predecessors, (47), 9 states have call successors, (47) Word has length 161 [2023-12-21 09:51:28,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:51:35,114 INFO L225 Difference]: With dead ends: 1257460 [2023-12-21 09:51:35,115 INFO L226 Difference]: Without dead ends: 1257028 [2023-12-21 09:51:35,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10525 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3820, Invalid=26630, Unknown=0, NotChecked=0, Total=30450 [2023-12-21 09:51:35,665 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 7484 mSDsluCounter, 12829 mSDsCounter, 0 mSdLazyCounter, 31248 mSolverCounterSat, 2636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7515 SdHoareTripleChecker+Valid, 13457 SdHoareTripleChecker+Invalid, 33884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2636 IncrementalHoareTripleChecker+Valid, 31248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-21 09:51:35,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7515 Valid, 13457 Invalid, 33884 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2636 Valid, 31248 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-12-21 09:51:37,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257028 states.