/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_spec27_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 09:46:49,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 09:46:50,003 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 09:46:50,009 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 09:46:50,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 09:46:50,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 09:46:50,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 09:46:50,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 09:46:50,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 09:46:50,045 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 09:46:50,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 09:46:50,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 09:46:50,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 09:46:50,047 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 09:46:50,047 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 09:46:50,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 09:46:50,048 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 09:46:50,048 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 09:46:50,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 09:46:50,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 09:46:50,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 09:46:50,050 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 09:46:50,050 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 09:46:50,050 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 09:46:50,051 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 09:46:50,051 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 09:46:50,051 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 09:46:50,051 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 09:46:50,052 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 09:46:50,052 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 09:46:50,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 09:46:50,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 09:46:50,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:46:50,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 09:46:50,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 09:46:50,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 09:46:50,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 09:46:50,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 09:46:50,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 09:46:50,054 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 09:46:50,054 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 09:46:50,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 09:46:50,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 09:46:50,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 09:46:50,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 09:46:50,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 09:46:50,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 09:46:50,300 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 09:46:50,300 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 09:46:50,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c [2023-12-21 09:46:51,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 09:46:51,782 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 09:46:51,783 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c [2023-12-21 09:46:51,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3324c477/d371ba0b10874ce8bbab3e5016a90016/FLAG031a34ba7 [2023-12-21 09:46:51,829 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3324c477/d371ba0b10874ce8bbab3e5016a90016 [2023-12-21 09:46:51,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 09:46:51,833 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 09:46:51,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 09:46:51,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 09:46:51,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 09:46:51,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:46:51" (1/1) ... [2023-12-21 09:46:51,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e1d52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:51, skipping insertion in model container [2023-12-21 09:46:51,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:46:51" (1/1) ... [2023-12-21 09:46:51,906 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 09:46:52,071 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_spec27_product33.cil.c[1543,1556] [2023-12-21 09:46:52,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:46:52,443 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 09:46:52,453 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2023-12-21 09:46:52,455 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [57] [2023-12-21 09:46:52,455 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [75] [2023-12-21 09:46:52,455 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [441] [2023-12-21 09:46:52,455 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [767] [2023-12-21 09:46:52,456 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [915] [2023-12-21 09:46:52,456 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [1134] [2023-12-21 09:46:52,456 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1166] [2023-12-21 09:46:52,456 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1201] [2023-12-21 09:46:52,456 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1603] [2023-12-21 09:46:52,456 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2673] [2023-12-21 09:46:52,459 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_spec27_product33.cil.c[1543,1556] [2023-12-21 09:46:52,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:46:52,612 INFO L206 MainTranslator]: Completed translation [2023-12-21 09:46:52,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52 WrapperNode [2023-12-21 09:46:52,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 09:46:52,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 09:46:52,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 09:46:52,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 09:46:52,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,727 INFO L138 Inliner]: procedures = 134, calls = 213, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1050 [2023-12-21 09:46:52,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 09:46:52,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 09:46:52,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 09:46:52,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 09:46:52,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,794 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 09:46:52,794 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,824 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 09:46:52,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 09:46:52,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 09:46:52,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 09:46:52,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (1/1) ... [2023-12-21 09:46:52,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:46:52,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:46:52,868 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 09:46:52,914 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 09:46:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-21 09:46:52,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-21 09:46:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-21 09:46:52,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-21 09:46:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-21 09:46:52,922 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-21 09:46:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-21 09:46:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-21 09:46:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-21 09:46:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-21 09:46:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-21 09:46:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-21 09:46:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-21 09:46:52,924 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-21 09:46:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-21 09:46:52,924 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-21 09:46:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-21 09:46:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-21 09:46:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-21 09:46:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-21 09:46:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-21 09:46:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-21 09:46:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-12-21 09:46:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-12-21 09:46:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-21 09:46:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-21 09:46:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 09:46:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-21 09:46:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-21 09:46:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-21 09:46:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-21 09:46:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-21 09:46:52,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-21 09:46:52,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-21 09:46:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-21 09:46:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-21 09:46:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-21 09:46:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2023-12-21 09:46:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2023-12-21 09:46:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-21 09:46:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-21 09:46:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-21 09:46:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-21 09:46:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-21 09:46:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-21 09:46:52,928 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-21 09:46:52,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-21 09:46:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-21 09:46:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-21 09:46:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 09:46:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 09:46:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 09:46:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 09:46:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-21 09:46:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-21 09:46:52,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 09:46:52,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 09:46:53,135 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 09:46:53,138 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 09:46:53,958 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 09:46:54,052 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 09:46:54,052 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 09:46:54,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:46:54 BoogieIcfgContainer [2023-12-21 09:46:54,053 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 09:46:54,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 09:46:54,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 09:46:54,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 09:46:54,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:46:51" (1/3) ... [2023-12-21 09:46:54,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e2b109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:46:54, skipping insertion in model container [2023-12-21 09:46:54,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:46:52" (2/3) ... [2023-12-21 09:46:54,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e2b109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:46:54, skipping insertion in model container [2023-12-21 09:46:54,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:46:54" (3/3) ... [2023-12-21 09:46:54,059 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product33.cil.c [2023-12-21 09:46:54,074 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 09:46:54,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 09:46:54,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 09:46:54,122 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;@58d780b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 09:46:54,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 09:46:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 363 states, 271 states have (on average 1.5535055350553506) internal successors, (421), 275 states have internal predecessors, (421), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-21 09:46:54,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 09:46:54,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:46:54,145 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, 1, 1, 1] [2023-12-21 09:46:54,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:46:54,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:46:54,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1393967087, now seen corresponding path program 1 times [2023-12-21 09:46:54,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:46:54,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172963824] [2023-12-21 09:46:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:54,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:46:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:46:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:46:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:46:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:46:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:46:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:46:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 09:46:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 09:46:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:46:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:46:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:46:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:46:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:46:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:46:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:46:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:46:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:46:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 09:46:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 09:46:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:54,884 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 09:46:54,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:46:54,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172963824] [2023-12-21 09:46:54,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172963824] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:46:54,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612580853] [2023-12-21 09:46:54,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:54,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:46:54,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:46:54,892 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 09:46:54,920 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 09:46:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:55,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 09:46:55,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:46:55,296 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 09:46:55,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:46:55,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612580853] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:46:55,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:46:55,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-21 09:46:55,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685183546] [2023-12-21 09:46:55,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:46:55,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 09:46:55,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:46:55,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 09:46:55,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:46:55,351 INFO L87 Difference]: Start difference. First operand has 363 states, 271 states have (on average 1.5535055350553506) internal successors, (421), 275 states have internal predecessors, (421), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:46:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:46:55,448 INFO L93 Difference]: Finished difference Result 577 states and 858 transitions. [2023-12-21 09:46:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 09:46:55,450 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 136 [2023-12-21 09:46:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:46:55,462 INFO L225 Difference]: With dead ends: 577 [2023-12-21 09:46:55,462 INFO L226 Difference]: Without dead ends: 360 [2023-12-21 09:46:55,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 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 09:46:55,469 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:46:55,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 529 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:46:55,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-12-21 09:46:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2023-12-21 09:46:55,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 269 states have (on average 1.5390334572490707) internal successors, (414), 272 states have internal predecessors, (414), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-21 09:46:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 543 transitions. [2023-12-21 09:46:55,528 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 543 transitions. Word has length 136 [2023-12-21 09:46:55,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:46:55,529 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 543 transitions. [2023-12-21 09:46:55,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:46:55,530 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 543 transitions. [2023-12-21 09:46:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 09:46:55,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:46:55,533 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, 1, 1, 1, 1] [2023-12-21 09:46:55,544 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 09:46:55,740 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 09:46:55,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:46:55,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:46:55,741 INFO L85 PathProgramCache]: Analyzing trace with hash -33941374, now seen corresponding path program 1 times [2023-12-21 09:46:55,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:46:55,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894652559] [2023-12-21 09:46:55,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:55,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:46:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:55,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:46:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:55,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:46:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:55,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:46:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:55,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:46:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:46:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:46:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 09:46:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 09:46:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:46:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:46:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:46:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:46:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:46:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:46:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:46:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:46:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 09:46:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 09:46:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 09:46:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,066 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 09:46:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:46:56,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894652559] [2023-12-21 09:46:56,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894652559] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:46:56,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611930134] [2023-12-21 09:46:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:56,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:46:56,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:46:56,069 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 09:46:56,091 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 09:46:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:56,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 09:46:56,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:46:56,456 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 09:46:56,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:46:56,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611930134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:46:56,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:46:56,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:46:56,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603542127] [2023-12-21 09:46:56,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:46:56,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:46:56,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:46:56,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:46:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:46:56,461 INFO L87 Difference]: Start difference. First operand 360 states and 543 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:46:56,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:46:56,551 INFO L93 Difference]: Finished difference Result 573 states and 845 transitions. [2023-12-21 09:46:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:46:56,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 137 [2023-12-21 09:46:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:46:56,558 INFO L225 Difference]: With dead ends: 573 [2023-12-21 09:46:56,558 INFO L226 Difference]: Without dead ends: 362 [2023-12-21 09:46:56,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:46:56,562 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 0 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:46:56,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1051 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:46:56,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-21 09:46:56,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2023-12-21 09:46:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 271 states have (on average 1.5350553505535056) internal successors, (416), 274 states have internal predecessors, (416), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2023-12-21 09:46:56,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 545 transitions. [2023-12-21 09:46:56,616 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 545 transitions. Word has length 137 [2023-12-21 09:46:56,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:46:56,616 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 545 transitions. [2023-12-21 09:46:56,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:46:56,616 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 545 transitions. [2023-12-21 09:46:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-21 09:46:56,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:46:56,619 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:46:56,631 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 09:46:56,827 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 09:46:56,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:46:56,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:46:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1544799312, now seen corresponding path program 1 times [2023-12-21 09:46:56,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:46:56,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009021197] [2023-12-21 09:46:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:56,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:46:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:46:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:46:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:46:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:46:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:46:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:46:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 09:46:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:46:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:46:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:46:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:46:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:46:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:46:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:46:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:46:57,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:46:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 09:46:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 09:46:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 09:46:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 09:46:57,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:46:57,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009021197] [2023-12-21 09:46:57,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009021197] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:46:57,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439266094] [2023-12-21 09:46:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:57,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:46:57,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:46:57,105 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 09:46:57,125 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 09:46:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:46:57,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:46:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 09:46:57,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:46:57,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439266094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:46:57,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:46:57,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:46:57,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282499895] [2023-12-21 09:46:57,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:46:57,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:46:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:46:57,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:46:57,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:46:57,444 INFO L87 Difference]: Start difference. First operand 362 states and 545 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:46:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:46:57,512 INFO L93 Difference]: Finished difference Result 758 states and 1156 transitions. [2023-12-21 09:46:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:46:57,513 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 144 [2023-12-21 09:46:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:46:57,517 INFO L225 Difference]: With dead ends: 758 [2023-12-21 09:46:57,517 INFO L226 Difference]: Without dead ends: 418 [2023-12-21 09:46:57,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 177 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 09:46:57,521 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 109 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:46:57,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1023 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:46:57,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-21 09:46:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 413. [2023-12-21 09:46:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 311 states have (on average 1.5530546623794212) internal successors, (483), 314 states have internal predecessors, (483), 76 states have call successors, (76), 25 states have call predecessors, (76), 25 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-12-21 09:46:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 634 transitions. [2023-12-21 09:46:57,551 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 634 transitions. Word has length 144 [2023-12-21 09:46:57,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:46:57,551 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 634 transitions. [2023-12-21 09:46:57,551 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:46:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 634 transitions. [2023-12-21 09:46:57,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 09:46:57,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:46:57,554 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:46:57,561 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 09:46:57,760 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 09:46:57,760 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:46:57,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:46:57,761 INFO L85 PathProgramCache]: Analyzing trace with hash 79296779, now seen corresponding path program 1 times [2023-12-21 09:46:57,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:46:57,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878240768] [2023-12-21 09:46:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:57,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:46:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:46:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:46:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:46:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:46:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:46:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:46:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 09:46:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:46:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:46:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:46:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:46:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:46:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:46:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:46:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:46:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:46:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 09:46:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 09:46:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 09:46:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 09:46:58,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:46:58,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878240768] [2023-12-21 09:46:58,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878240768] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:46:58,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890204043] [2023-12-21 09:46:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:58,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:46:58,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:46:58,027 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 09:46:58,047 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 09:46:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 09:46:58,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:46:58,405 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 09:46:58,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:46:58,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890204043] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:46:58,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:46:58,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 09:46:58,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715238194] [2023-12-21 09:46:58,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:46:58,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:46:58,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:46:58,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:46:58,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:46:58,408 INFO L87 Difference]: Start difference. First operand 413 states and 634 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, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 09:46:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:46:58,503 INFO L93 Difference]: Finished difference Result 821 states and 1262 transitions. [2023-12-21 09:46:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:46:58,503 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, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 145 [2023-12-21 09:46:58,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:46:58,506 INFO L225 Difference]: With dead ends: 821 [2023-12-21 09:46:58,506 INFO L226 Difference]: Without dead ends: 415 [2023-12-21 09:46:58,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 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 09:46:58,510 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 8 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:46:58,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2057 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 09:46:58,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-21 09:46:58,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2023-12-21 09:46:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 312 states have (on average 1.5512820512820513) internal successors, (484), 316 states have internal predecessors, (484), 76 states have call successors, (76), 25 states have call predecessors, (76), 26 states have return successors, (77), 75 states have call predecessors, (77), 75 states have call successors, (77) [2023-12-21 09:46:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 637 transitions. [2023-12-21 09:46:58,536 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 637 transitions. Word has length 145 [2023-12-21 09:46:58,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:46:58,536 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 637 transitions. [2023-12-21 09:46:58,536 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, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 09:46:58,536 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 637 transitions. [2023-12-21 09:46:58,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 09:46:58,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:46:58,539 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, 1, 1, 1, 1, 1, 1] [2023-12-21 09:46:58,551 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 09:46:58,747 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 09:46:58,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:46:58,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:46:58,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1792056434, now seen corresponding path program 1 times [2023-12-21 09:46:58,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:46:58,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767636991] [2023-12-21 09:46:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:58,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:46:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:46:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:46:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:46:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:46:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 09:46:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 09:46:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 09:46:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:46:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:46:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:46:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:46:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:46:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:46:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:46:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:46:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:46:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:46:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 09:46:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 09:46:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:58,989 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 09:46:58,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:46:58,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767636991] [2023-12-21 09:46:58,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767636991] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:46:58,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160975843] [2023-12-21 09:46:58,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:58,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:46:58,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:46:58,991 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 09:46:59,009 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 09:46:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 09:46:59,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:46:59,340 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 09:46:59,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:46:59,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160975843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:46:59,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:46:59,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-21 09:46:59,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747056229] [2023-12-21 09:46:59,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:46:59,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:46:59,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:46:59,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:46:59,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:46:59,342 INFO L87 Difference]: Start difference. First operand 415 states and 637 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 09:46:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:46:59,453 INFO L93 Difference]: Finished difference Result 823 states and 1267 transitions. [2023-12-21 09:46:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:46:59,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 146 [2023-12-21 09:46:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:46:59,456 INFO L225 Difference]: With dead ends: 823 [2023-12-21 09:46:59,457 INFO L226 Difference]: Without dead ends: 417 [2023-12-21 09:46:59,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 176 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 09:46:59,459 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 8 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:46:59,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2043 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 09:46:59,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-12-21 09:46:59,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2023-12-21 09:46:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 313 states have (on average 1.549520766773163) internal successors, (485), 318 states have internal predecessors, (485), 76 states have call successors, (76), 25 states have call predecessors, (76), 27 states have return successors, (82), 75 states have call predecessors, (82), 75 states have call successors, (82) [2023-12-21 09:46:59,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 643 transitions. [2023-12-21 09:46:59,479 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 643 transitions. Word has length 146 [2023-12-21 09:46:59,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:46:59,479 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 643 transitions. [2023-12-21 09:46:59,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 09:46:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 643 transitions. [2023-12-21 09:46:59,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 09:46:59,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:46:59,482 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, 1, 1] [2023-12-21 09:46:59,490 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 09:46:59,690 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 09:46:59,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:46:59,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:46:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash 15523946, now seen corresponding path program 1 times [2023-12-21 09:46:59,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:46:59,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260157804] [2023-12-21 09:46:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:46:59,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:46:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:46:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:46:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:46:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:46:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:46:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 09:46:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:46:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 09:46:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:46:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:46:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:46:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:46:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:46:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:46:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:46:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:46:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 09:46:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 09:46:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 09:46:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:46:59,896 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 09:46:59,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:46:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260157804] [2023-12-21 09:46:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260157804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:46:59,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:46:59,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:46:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356599959] [2023-12-21 09:46:59,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:46:59,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:46:59,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:46:59,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:46:59,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:46:59,898 INFO L87 Difference]: Start difference. First operand 417 states and 643 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 09:47:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:02,228 INFO L93 Difference]: Finished difference Result 993 states and 1550 transitions. [2023-12-21 09:47:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:47:02,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 147 [2023-12-21 09:47:02,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:02,237 INFO L225 Difference]: With dead ends: 993 [2023-12-21 09:47:02,237 INFO L226 Difference]: Without dead ends: 595 [2023-12-21 09:47:02,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:47:02,240 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1258 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 500 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:02,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1259 Valid, 1011 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [500 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 09:47:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-12-21 09:47:02,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 417. [2023-12-21 09:47:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 313 states have (on average 1.549520766773163) internal successors, (485), 318 states have internal predecessors, (485), 76 states have call successors, (76), 25 states have call predecessors, (76), 27 states have return successors, (81), 75 states have call predecessors, (81), 75 states have call successors, (81) [2023-12-21 09:47:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 642 transitions. [2023-12-21 09:47:02,291 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 642 transitions. Word has length 147 [2023-12-21 09:47:02,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:02,292 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 642 transitions. [2023-12-21 09:47:02,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 09:47:02,293 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 642 transitions. [2023-12-21 09:47:02,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 09:47:02,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:02,296 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, 1, 1, 1, 1] [2023-12-21 09:47:02,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 09:47:02,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:02,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:02,297 INFO L85 PathProgramCache]: Analyzing trace with hash 431145519, now seen corresponding path program 2 times [2023-12-21 09:47:02,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:02,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621354388] [2023-12-21 09:47:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:02,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 09:47:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 09:47:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 09:47:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:47:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:47:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:47:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:47:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:47:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:47:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:47:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 09:47:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 09:47:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 09:47:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 09:47:02,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:02,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621354388] [2023-12-21 09:47:02,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621354388] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:02,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:02,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:47:02,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807289774] [2023-12-21 09:47:02,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:02,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:47:02,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:47:02,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:47:02,514 INFO L87 Difference]: Start difference. First operand 417 states and 642 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, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 09:47:04,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:04,604 INFO L93 Difference]: Finished difference Result 995 states and 1553 transitions. [2023-12-21 09:47:04,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:47:04,605 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, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 148 [2023-12-21 09:47:04,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:04,608 INFO L225 Difference]: With dead ends: 995 [2023-12-21 09:47:04,608 INFO L226 Difference]: Without dead ends: 597 [2023-12-21 09:47:04,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:47:04,611 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1321 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:04,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 1011 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 09:47:04,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-12-21 09:47:04,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 419. [2023-12-21 09:47:04,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 314 states have (on average 1.5477707006369428) internal successors, (486), 320 states have internal predecessors, (486), 76 states have call successors, (76), 25 states have call predecessors, (76), 28 states have return successors, (83), 75 states have call predecessors, (83), 75 states have call successors, (83) [2023-12-21 09:47:04,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 645 transitions. [2023-12-21 09:47:04,649 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 645 transitions. Word has length 148 [2023-12-21 09:47:04,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:04,650 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 645 transitions. [2023-12-21 09:47:04,650 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, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-21 09:47:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 645 transitions. [2023-12-21 09:47:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 09:47:04,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:04,652 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, 1, 1, 1, 1] [2023-12-21 09:47:04,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 09:47:04,653 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:04,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:04,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1727010673, now seen corresponding path program 1 times [2023-12-21 09:47:04,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:04,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528803150] [2023-12-21 09:47:04,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:04,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:47:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 09:47:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:47:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:47:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:47:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:47:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:47:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:47:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:47:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 09:47:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 09:47:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 09:47:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 09:47:04,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:04,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528803150] [2023-12-21 09:47:04,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528803150] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:04,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:04,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:47:04,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326166120] [2023-12-21 09:47:04,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:04,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:47:04,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:04,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:47:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:47:04,905 INFO L87 Difference]: Start difference. First operand 419 states and 645 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, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-21 09:47:07,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:07,771 INFO L93 Difference]: Finished difference Result 993 states and 1548 transitions. [2023-12-21 09:47:07,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:47:07,771 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, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 149 [2023-12-21 09:47:07,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:07,775 INFO L225 Difference]: With dead ends: 993 [2023-12-21 09:47:07,775 INFO L226 Difference]: Without dead ends: 597 [2023-12-21 09:47:07,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 09:47:07,777 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 1369 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 4319 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 4847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 4319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:07,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 1398 Invalid, 4847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 4319 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 09:47:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-12-21 09:47:07,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 419. [2023-12-21 09:47:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 314 states have (on average 1.5477707006369428) internal successors, (486), 320 states have internal predecessors, (486), 76 states have call successors, (76), 25 states have call predecessors, (76), 28 states have return successors, (82), 75 states have call predecessors, (82), 75 states have call successors, (82) [2023-12-21 09:47:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 644 transitions. [2023-12-21 09:47:07,807 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 644 transitions. Word has length 149 [2023-12-21 09:47:07,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:07,808 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 644 transitions. [2023-12-21 09:47:07,808 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, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-21 09:47:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 644 transitions. [2023-12-21 09:47:07,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 09:47:07,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:07,810 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, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:07,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 09:47:07,810 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:07,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1634127973, now seen corresponding path program 2 times [2023-12-21 09:47:07,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:07,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792108434] [2023-12-21 09:47:07,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:07,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:07,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:07,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:07,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:47:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:47:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:47:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:47:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:47:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:47:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:47:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:47:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:47:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 09:47:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 09:47:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 09:47:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:08,047 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 09:47:08,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:08,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792108434] [2023-12-21 09:47:08,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792108434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:08,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:08,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:47:08,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518720430] [2023-12-21 09:47:08,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:08,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:47:08,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:08,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:47:08,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:47:08,050 INFO L87 Difference]: Start difference. First operand 419 states and 644 transitions. Second operand has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-21 09:47:10,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:10,767 INFO L93 Difference]: Finished difference Result 995 states and 1554 transitions. [2023-12-21 09:47:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:47:10,768 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 150 [2023-12-21 09:47:10,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:10,772 INFO L225 Difference]: With dead ends: 995 [2023-12-21 09:47:10,772 INFO L226 Difference]: Without dead ends: 599 [2023-12-21 09:47:10,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 09:47:10,774 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 1317 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 4546 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 5057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 4546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:10,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 1398 Invalid, 5057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 4546 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 09:47:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-12-21 09:47:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 421. [2023-12-21 09:47:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 315 states have (on average 1.546031746031746) internal successors, (487), 322 states have internal predecessors, (487), 76 states have call successors, (76), 25 states have call predecessors, (76), 29 states have return successors, (87), 75 states have call predecessors, (87), 75 states have call successors, (87) [2023-12-21 09:47:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 650 transitions. [2023-12-21 09:47:10,803 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 650 transitions. Word has length 150 [2023-12-21 09:47:10,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:10,803 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 650 transitions. [2023-12-21 09:47:10,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 8 states have internal predecessors, (92), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-12-21 09:47:10,804 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 650 transitions. [2023-12-21 09:47:10,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 09:47:10,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:10,806 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, 1, 1, 1, 1, 1, 1] [2023-12-21 09:47:10,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 09:47:10,806 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:10,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1368196460, now seen corresponding path program 1 times [2023-12-21 09:47:10,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:10,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193772244] [2023-12-21 09:47:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:10,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:10,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:10,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:10,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:47:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:47:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:47:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:47:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:47:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:47:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:47:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:47:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 09:47:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 09:47:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 09:47:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 09:47:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 09:47:11,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:11,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193772244] [2023-12-21 09:47:11,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193772244] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:47:11,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373378931] [2023-12-21 09:47:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:11,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:47:11,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:47:11,077 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 09:47:11,079 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 09:47:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:11,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:47:11,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:47:11,445 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 09:47:11,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:47:11,542 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 09:47:11,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373378931] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:47:11,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:47:11,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-12-21 09:47:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912409048] [2023-12-21 09:47:11,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:47:11,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 09:47:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 09:47:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:47:11,546 INFO L87 Difference]: Start difference. First operand 421 states and 650 transitions. Second operand has 15 states, 14 states have (on average 10.785714285714286) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (43), 6 states have call predecessors, (43), 3 states have return successors, (36), 3 states have call predecessors, (36), 4 states have call successors, (36) [2023-12-21 09:47:14,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:14,585 INFO L93 Difference]: Finished difference Result 1344 states and 2200 transitions. [2023-12-21 09:47:14,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 09:47:14,586 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.785714285714286) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (43), 6 states have call predecessors, (43), 3 states have return successors, (36), 3 states have call predecessors, (36), 4 states have call successors, (36) Word has length 151 [2023-12-21 09:47:14,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:14,591 INFO L225 Difference]: With dead ends: 1344 [2023-12-21 09:47:14,591 INFO L226 Difference]: Without dead ends: 949 [2023-12-21 09:47:14,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-12-21 09:47:14,594 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 2453 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 5139 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2470 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 5981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 5139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:14,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2470 Valid, 1602 Invalid, 5981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 5139 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-21 09:47:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-12-21 09:47:14,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 756. [2023-12-21 09:47:14,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 586 states have (on average 1.6040955631399318) internal successors, (940), 593 states have internal predecessors, (940), 140 states have call successors, (140), 25 states have call predecessors, (140), 29 states have return successors, (161), 139 states have call predecessors, (161), 139 states have call successors, (161) [2023-12-21 09:47:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1241 transitions. [2023-12-21 09:47:14,639 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1241 transitions. Word has length 151 [2023-12-21 09:47:14,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:14,640 INFO L495 AbstractCegarLoop]: Abstraction has 756 states and 1241 transitions. [2023-12-21 09:47:14,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.785714285714286) internal successors, (151), 11 states have internal predecessors, (151), 4 states have call successors, (43), 6 states have call predecessors, (43), 3 states have return successors, (36), 3 states have call predecessors, (36), 4 states have call successors, (36) [2023-12-21 09:47:14,640 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1241 transitions. [2023-12-21 09:47:14,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 09:47:14,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:14,644 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 09:47:14,659 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 09:47:14,853 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 09:47:14,854 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:14,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:14,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1697703500, now seen corresponding path program 1 times [2023-12-21 09:47:14,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:14,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399676955] [2023-12-21 09:47:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:47:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:47:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:47:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:47:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:47:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:47:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:47:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:47:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:47:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 09:47:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 09:47:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 09:47:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:14,988 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 09:47:14,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:14,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399676955] [2023-12-21 09:47:14,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399676955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:14,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:14,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:47:14,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860873442] [2023-12-21 09:47:14,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:14,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:47:14,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:47:14,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:47:14,990 INFO L87 Difference]: Start difference. First operand 756 states and 1241 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:16,677 INFO L93 Difference]: Finished difference Result 1939 states and 3259 transitions. [2023-12-21 09:47:16,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:47:16,678 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2023-12-21 09:47:16,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:16,683 INFO L225 Difference]: With dead ends: 1939 [2023-12-21 09:47:16,683 INFO L226 Difference]: Without dead ends: 1251 [2023-12-21 09:47:16,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 09:47:16,686 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1424 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:16,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 797 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 09:47:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2023-12-21 09:47:16,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1068. [2023-12-21 09:47:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 834 states have (on average 1.6211031175059951) internal successors, (1352), 841 states have internal predecessors, (1352), 204 states have call successors, (204), 25 states have call predecessors, (204), 29 states have return successors, (235), 203 states have call predecessors, (235), 203 states have call successors, (235) [2023-12-21 09:47:16,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1791 transitions. [2023-12-21 09:47:16,743 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1791 transitions. Word has length 155 [2023-12-21 09:47:16,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:16,743 INFO L495 AbstractCegarLoop]: Abstraction has 1068 states and 1791 transitions. [2023-12-21 09:47:16,743 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:16,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1791 transitions. [2023-12-21 09:47:16,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 09:47:16,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:16,749 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] [2023-12-21 09:47:16,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 09:47:16,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:16,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:16,750 INFO L85 PathProgramCache]: Analyzing trace with hash 756466314, now seen corresponding path program 1 times [2023-12-21 09:47:16,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:16,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243581949] [2023-12-21 09:47:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:16,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:47:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:47:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:47:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:47:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:47:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:47:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:47:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:47:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:47:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 09:47:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 09:47:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 09:47:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:16,894 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 09:47:16,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:16,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243581949] [2023-12-21 09:47:16,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243581949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:16,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:16,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:47:16,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806209450] [2023-12-21 09:47:16,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:16,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:47:16,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:16,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:47:16,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:47:16,896 INFO L87 Difference]: Start difference. First operand 1068 states and 1791 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:18,487 INFO L93 Difference]: Finished difference Result 2708 states and 4607 transitions. [2023-12-21 09:47:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:47:18,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2023-12-21 09:47:18,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:18,502 INFO L225 Difference]: With dead ends: 2708 [2023-12-21 09:47:18,502 INFO L226 Difference]: Without dead ends: 1758 [2023-12-21 09:47:18,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 09:47:18,507 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1379 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:18,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 739 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 09:47:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2023-12-21 09:47:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1575. [2023-12-21 09:47:18,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1246 states have (on average 1.6308186195826646) internal successors, (2032), 1253 states have internal predecessors, (2032), 299 states have call successors, (299), 25 states have call predecessors, (299), 29 states have return successors, (330), 298 states have call predecessors, (330), 298 states have call successors, (330) [2023-12-21 09:47:18,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2661 transitions. [2023-12-21 09:47:18,589 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2661 transitions. Word has length 156 [2023-12-21 09:47:18,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:18,590 INFO L495 AbstractCegarLoop]: Abstraction has 1575 states and 2661 transitions. [2023-12-21 09:47:18,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:18,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2661 transitions. [2023-12-21 09:47:18,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 09:47:18,599 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:18,599 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 09:47:18,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 09:47:18,599 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:18,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:18,600 INFO L85 PathProgramCache]: Analyzing trace with hash -299846974, now seen corresponding path program 1 times [2023-12-21 09:47:18,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:18,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223447885] [2023-12-21 09:47:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:18,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:47:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:47:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:47:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:47:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:47:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:47:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:47:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:47:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 09:47:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 09:47:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 09:47:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 09:47:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:18,723 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 09:47:18,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:18,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223447885] [2023-12-21 09:47:18,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223447885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:18,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:18,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:47:18,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859037160] [2023-12-21 09:47:18,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:18,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:47:18,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:47:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:47:18,727 INFO L87 Difference]: Start difference. First operand 1575 states and 2661 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:20,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:20,254 INFO L93 Difference]: Finished difference Result 3854 states and 6632 transitions. [2023-12-21 09:47:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:47:20,255 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 157 [2023-12-21 09:47:20,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:20,268 INFO L225 Difference]: With dead ends: 3854 [2023-12-21 09:47:20,269 INFO L226 Difference]: Without dead ends: 2525 [2023-12-21 09:47:20,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 09:47:20,273 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1449 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:20,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 738 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:47:20,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2023-12-21 09:47:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2342. [2023-12-21 09:47:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 1890 states have (on average 1.6386243386243386) internal successors, (3097), 1897 states have internal predecessors, (3097), 422 states have call successors, (422), 25 states have call predecessors, (422), 29 states have return successors, (469), 421 states have call predecessors, (469), 421 states have call successors, (469) [2023-12-21 09:47:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3988 transitions. [2023-12-21 09:47:20,396 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3988 transitions. Word has length 157 [2023-12-21 09:47:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:20,396 INFO L495 AbstractCegarLoop]: Abstraction has 2342 states and 3988 transitions. [2023-12-21 09:47:20,396 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:20,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3988 transitions. [2023-12-21 09:47:20,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 09:47:20,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:20,409 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] [2023-12-21 09:47:20,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 09:47:20,409 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:20,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:20,410 INFO L85 PathProgramCache]: Analyzing trace with hash 59700907, now seen corresponding path program 1 times [2023-12-21 09:47:20,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:20,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318624185] [2023-12-21 09:47:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:20,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:47:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:47:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:47:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:47:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:47:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:47:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:47:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:47:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 09:47:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 09:47:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 09:47:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 09:47:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:20,518 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 09:47:20,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:20,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318624185] [2023-12-21 09:47:20,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318624185] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:20,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:20,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:47:20,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114048166] [2023-12-21 09:47:20,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:20,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:47:20,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:47:20,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:47:20,521 INFO L87 Difference]: Start difference. First operand 2342 states and 3988 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:22,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:22,075 INFO L93 Difference]: Finished difference Result 5636 states and 9790 transitions. [2023-12-21 09:47:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:47:22,075 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 158 [2023-12-21 09:47:22,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:22,097 INFO L225 Difference]: With dead ends: 5636 [2023-12-21 09:47:22,097 INFO L226 Difference]: Without dead ends: 3749 [2023-12-21 09:47:22,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 09:47:22,106 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1445 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 2104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:22,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 741 Invalid, 2104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:47:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2023-12-21 09:47:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 3566. [2023-12-21 09:47:22,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 2935 states have (on average 1.6439522998296423) internal successors, (4825), 2942 states have internal predecessors, (4825), 601 states have call successors, (601), 25 states have call predecessors, (601), 29 states have return successors, (674), 600 states have call predecessors, (674), 600 states have call successors, (674) [2023-12-21 09:47:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 6100 transitions. [2023-12-21 09:47:22,301 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 6100 transitions. Word has length 158 [2023-12-21 09:47:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:22,301 INFO L495 AbstractCegarLoop]: Abstraction has 3566 states and 6100 transitions. [2023-12-21 09:47:22,302 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:22,302 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 6100 transitions. [2023-12-21 09:47:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 09:47:22,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:22,326 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 09:47:22,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 09:47:22,326 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:22,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:22,327 INFO L85 PathProgramCache]: Analyzing trace with hash 878350846, now seen corresponding path program 1 times [2023-12-21 09:47:22,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:22,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031044946] [2023-12-21 09:47:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:22,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:47:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:47:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:47:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:47:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:47:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:47:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:47:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 09:47:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 09:47:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 09:47:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 09:47:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 09:47:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:22,438 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 09:47:22,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:22,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031044946] [2023-12-21 09:47:22,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031044946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:22,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:22,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:47:22,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985183727] [2023-12-21 09:47:22,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:22,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:47:22,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:22,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:47:22,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:47:22,440 INFO L87 Difference]: Start difference. First operand 3566 states and 6100 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:24,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:24,006 INFO L93 Difference]: Finished difference Result 8615 states and 15030 transitions. [2023-12-21 09:47:24,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:47:24,007 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 159 [2023-12-21 09:47:24,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:24,041 INFO L225 Difference]: With dead ends: 8615 [2023-12-21 09:47:24,041 INFO L226 Difference]: Without dead ends: 5807 [2023-12-21 09:47:24,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 09:47:24,051 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1377 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:24,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 754 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:47:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2023-12-21 09:47:24,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5624. [2023-12-21 09:47:24,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5624 states, 4617 states have (on average 1.6348278102664067) internal successors, (7548), 4624 states have internal predecessors, (7548), 977 states have call successors, (977), 25 states have call predecessors, (977), 29 states have return successors, (1094), 976 states have call predecessors, (1094), 976 states have call successors, (1094) [2023-12-21 09:47:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5624 states to 5624 states and 9619 transitions. [2023-12-21 09:47:24,343 INFO L78 Accepts]: Start accepts. Automaton has 5624 states and 9619 transitions. Word has length 159 [2023-12-21 09:47:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:24,343 INFO L495 AbstractCegarLoop]: Abstraction has 5624 states and 9619 transitions. [2023-12-21 09:47:24,343 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:24,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5624 states and 9619 transitions. [2023-12-21 09:47:24,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 09:47:24,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:24,370 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] [2023-12-21 09:47:24,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 09:47:24,371 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:24,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:24,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1509012625, now seen corresponding path program 1 times [2023-12-21 09:47:24,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:24,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459697393] [2023-12-21 09:47:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:24,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:47:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:47:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:47:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:47:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:47:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:47:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:47:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:47:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:47:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 09:47:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 09:47:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 09:47:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:24,489 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 09:47:24,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:24,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459697393] [2023-12-21 09:47:24,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459697393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:24,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:24,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:47:24,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110807800] [2023-12-21 09:47:24,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:24,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:47:24,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:24,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:47:24,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:47:24,504 INFO L87 Difference]: Start difference. First operand 5624 states and 9619 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:26,139 INFO L93 Difference]: Finished difference Result 13976 states and 24387 transitions. [2023-12-21 09:47:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:47:26,140 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 160 [2023-12-21 09:47:26,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:26,230 INFO L225 Difference]: With dead ends: 13976 [2023-12-21 09:47:26,231 INFO L226 Difference]: Without dead ends: 9496 [2023-12-21 09:47:26,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 09:47:26,241 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1467 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:26,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 745 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:47:26,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9496 states. [2023-12-21 09:47:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9496 to 9313. [2023-12-21 09:47:26,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9313 states, 7700 states have (on average 1.6335064935064936) internal successors, (12578), 7707 states have internal predecessors, (12578), 1583 states have call successors, (1583), 25 states have call predecessors, (1583), 29 states have return successors, (1778), 1582 states have call predecessors, (1778), 1582 states have call successors, (1778) [2023-12-21 09:47:26,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9313 states to 9313 states and 15939 transitions. [2023-12-21 09:47:26,678 INFO L78 Accepts]: Start accepts. Automaton has 9313 states and 15939 transitions. Word has length 160 [2023-12-21 09:47:26,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:26,678 INFO L495 AbstractCegarLoop]: Abstraction has 9313 states and 15939 transitions. [2023-12-21 09:47:26,678 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:26,678 INFO L276 IsEmpty]: Start isEmpty. Operand 9313 states and 15939 transitions. [2023-12-21 09:47:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 09:47:26,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:26,719 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 09:47:26,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 09:47:26,719 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:26,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:26,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1893045612, now seen corresponding path program 1 times [2023-12-21 09:47:26,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:26,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451037308] [2023-12-21 09:47:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:26,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:47:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:47:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:47:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:47:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:47:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:47:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:47:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 09:47:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 09:47:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 09:47:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 09:47:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 09:47:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:26,829 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 09:47:26,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451037308] [2023-12-21 09:47:26,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451037308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:26,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:26,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:47:26,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791077496] [2023-12-21 09:47:26,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:26,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:47:26,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:26,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:47:26,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:47:26,831 INFO L87 Difference]: Start difference. First operand 9313 states and 15939 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:28,605 INFO L93 Difference]: Finished difference Result 24168 states and 42151 transitions. [2023-12-21 09:47:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:47:28,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 161 [2023-12-21 09:47:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:28,663 INFO L225 Difference]: With dead ends: 24168 [2023-12-21 09:47:28,664 INFO L226 Difference]: Without dead ends: 16456 [2023-12-21 09:47:28,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 09:47:28,691 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1382 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:28,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 797 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:47:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16456 states. [2023-12-21 09:47:29,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16456 to 16273. [2023-12-21 09:47:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16273 states, 13457 states have (on average 1.625250798840752) internal successors, (21871), 13464 states have internal predecessors, (21871), 2786 states have call successors, (2786), 25 states have call predecessors, (2786), 29 states have return successors, (3125), 2785 states have call predecessors, (3125), 2785 states have call successors, (3125) [2023-12-21 09:47:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16273 states to 16273 states and 27782 transitions. [2023-12-21 09:47:29,384 INFO L78 Accepts]: Start accepts. Automaton has 16273 states and 27782 transitions. Word has length 161 [2023-12-21 09:47:29,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:29,384 INFO L495 AbstractCegarLoop]: Abstraction has 16273 states and 27782 transitions. [2023-12-21 09:47:29,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:29,384 INFO L276 IsEmpty]: Start isEmpty. Operand 16273 states and 27782 transitions. [2023-12-21 09:47:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 09:47:29,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:29,437 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, 1] [2023-12-21 09:47:29,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 09:47:29,437 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:29,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1406103728, now seen corresponding path program 1 times [2023-12-21 09:47:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:29,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114361023] [2023-12-21 09:47:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:29,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:47:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:47:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:47:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:47:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:47:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:47:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:47:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:47:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 09:47:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 09:47:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 09:47:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 09:47:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:29,541 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 09:47:29,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:29,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114361023] [2023-12-21 09:47:29,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114361023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:29,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:29,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:47:29,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899918539] [2023-12-21 09:47:29,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:29,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:47:29,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:29,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:47:29,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:47:29,544 INFO L87 Difference]: Start difference. First operand 16273 states and 27782 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:31,580 INFO L93 Difference]: Finished difference Result 43143 states and 75163 transitions. [2023-12-21 09:47:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:47:31,580 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2023-12-21 09:47:31,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:31,703 INFO L225 Difference]: With dead ends: 43143 [2023-12-21 09:47:31,703 INFO L226 Difference]: Without dead ends: 29119 [2023-12-21 09:47:31,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 09:47:31,745 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1342 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:31,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 742 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 1589 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:47:31,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29119 states. [2023-12-21 09:47:32,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29119 to 28936. [2023-12-21 09:47:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28936 states, 24081 states have (on average 1.6219010838420331) internal successors, (39057), 24088 states have internal predecessors, (39057), 4825 states have call successors, (4825), 25 states have call predecessors, (4825), 29 states have return successors, (5438), 4824 states have call predecessors, (5438), 4824 states have call successors, (5438) [2023-12-21 09:47:32,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28936 states to 28936 states and 49320 transitions. [2023-12-21 09:47:32,982 INFO L78 Accepts]: Start accepts. Automaton has 28936 states and 49320 transitions. Word has length 162 [2023-12-21 09:47:32,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:32,983 INFO L495 AbstractCegarLoop]: Abstraction has 28936 states and 49320 transitions. [2023-12-21 09:47:32,983 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:32,983 INFO L276 IsEmpty]: Start isEmpty. Operand 28936 states and 49320 transitions. [2023-12-21 09:47:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 09:47:33,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:33,062 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, 1, 1] [2023-12-21 09:47:33,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 09:47:33,063 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:33,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1487598158, now seen corresponding path program 1 times [2023-12-21 09:47:33,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:33,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829932615] [2023-12-21 09:47:33,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:33,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:47:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:47:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:47:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:47:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:47:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:47:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:47:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:47:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 09:47:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 09:47:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 09:47:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 09:47:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:33,172 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 09:47:33,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:33,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829932615] [2023-12-21 09:47:33,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829932615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:33,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:33,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:47:33,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822152638] [2023-12-21 09:47:33,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:33,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:47:33,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:47:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:47:33,175 INFO L87 Difference]: Start difference. First operand 28936 states and 49320 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:36,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:36,088 INFO L93 Difference]: Finished difference Result 78915 states and 136722 transitions. [2023-12-21 09:47:36,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:47:36,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 163 [2023-12-21 09:47:36,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:36,316 INFO L225 Difference]: With dead ends: 78915 [2023-12-21 09:47:36,316 INFO L226 Difference]: Without dead ends: 53007 [2023-12-21 09:47:36,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 09:47:36,380 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1411 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:36,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1426 Valid, 757 Invalid, 2138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 09:47:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53007 states. [2023-12-21 09:47:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53007 to 52824. [2023-12-21 09:47:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52824 states, 44254 states have (on average 1.6171871469245718) internal successors, (71567), 44261 states have internal predecessors, (71567), 8540 states have call successors, (8540), 25 states have call predecessors, (8540), 29 states have return successors, (9685), 8539 states have call predecessors, (9685), 8539 states have call successors, (9685) [2023-12-21 09:47:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52824 states to 52824 states and 89792 transitions. [2023-12-21 09:47:38,647 INFO L78 Accepts]: Start accepts. Automaton has 52824 states and 89792 transitions. Word has length 163 [2023-12-21 09:47:38,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:38,647 INFO L495 AbstractCegarLoop]: Abstraction has 52824 states and 89792 transitions. [2023-12-21 09:47:38,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 52824 states and 89792 transitions. [2023-12-21 09:47:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-21 09:47:38,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:38,755 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, 1, 1, 1] [2023-12-21 09:47:38,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 09:47:38,756 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:38,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash 425407184, now seen corresponding path program 1 times [2023-12-21 09:47:38,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:38,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133545268] [2023-12-21 09:47:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:38,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:47:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:47:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:47:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:47:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:47:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:47:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:47:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:47:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 09:47:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 09:47:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 09:47:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 09:47:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:38,859 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 09:47:38,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:38,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133545268] [2023-12-21 09:47:38,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133545268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:47:38,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:47:38,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:47:38,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140277316] [2023-12-21 09:47:38,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:47:38,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:47:38,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:38,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:47:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:47:38,861 INFO L87 Difference]: Start difference. First operand 52824 states and 89792 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:42,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:47:42,381 INFO L93 Difference]: Finished difference Result 98690 states and 171427 transitions. [2023-12-21 09:47:42,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:47:42,382 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 164 [2023-12-21 09:47:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:47:42,803 INFO L225 Difference]: With dead ends: 98690 [2023-12-21 09:47:42,804 INFO L226 Difference]: Without dead ends: 98479 [2023-12-21 09:47:42,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 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 09:47:42,854 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1309 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 09:47:42,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 742 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 09:47:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98479 states. [2023-12-21 09:47:45,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98479 to 98296. [2023-12-21 09:47:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98296 states, 82927 states have (on average 1.6110072714556176) internal successors, (133596), 82934 states have internal predecessors, (133596), 15339 states have call successors, (15339), 25 states have call predecessors, (15339), 29 states have return successors, (17530), 15338 states have call predecessors, (17530), 15338 states have call successors, (17530) [2023-12-21 09:47:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98296 states to 98296 states and 166465 transitions. [2023-12-21 09:47:46,639 INFO L78 Accepts]: Start accepts. Automaton has 98296 states and 166465 transitions. Word has length 164 [2023-12-21 09:47:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:47:46,640 INFO L495 AbstractCegarLoop]: Abstraction has 98296 states and 166465 transitions. [2023-12-21 09:47:46,641 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, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-21 09:47:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 98296 states and 166465 transitions. [2023-12-21 09:47:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 09:47:47,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:47:47,040 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, 1, 1, 1, 1] [2023-12-21 09:47:47,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 09:47:47,040 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:47:47,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:47:47,040 INFO L85 PathProgramCache]: Analyzing trace with hash -565647219, now seen corresponding path program 1 times [2023-12-21 09:47:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:47:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016763256] [2023-12-21 09:47:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:47,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:47:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:47:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:47:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:47:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:47:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:47:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:47:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:47:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:47:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:47:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:47:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:47:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:47:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 09:47:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 09:47:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 09:47:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:47:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 09:47:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 09:47:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 09:47:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,569 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 09:47:47,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:47:47,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016763256] [2023-12-21 09:47:47,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016763256] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:47:47,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151761407] [2023-12-21 09:47:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:47:47,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:47:47,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:47:47,571 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 09:47:47,575 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 09:47:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:47:47,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 09:47:47,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:47:48,124 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 09:47:48,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:47:48,568 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 09:47:48,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151761407] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:47:48,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:47:48,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2023-12-21 09:47:48,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639416049] [2023-12-21 09:47:48,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:47:48,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 09:47:48,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:47:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 09:47:48,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=908, Unknown=0, NotChecked=0, Total=992 [2023-12-21 09:47:48,571 INFO L87 Difference]: Start difference. First operand 98296 states and 166465 transitions. Second operand has 32 states, 30 states have (on average 8.3) internal successors, (249), 24 states have internal predecessors, (249), 9 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2023-12-21 09:48:23,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:48:23,102 INFO L93 Difference]: Finished difference Result 588586 states and 1045927 transitions. [2023-12-21 09:48:23,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2023-12-21 09:48:23,103 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.3) internal successors, (249), 24 states have internal predecessors, (249), 9 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) Word has length 165 [2023-12-21 09:48:23,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:48:26,878 INFO L225 Difference]: With dead ends: 588586 [2023-12-21 09:48:26,878 INFO L226 Difference]: Without dead ends: 588378 [2023-12-21 09:48:27,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11960 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3913, Invalid=29029, Unknown=0, NotChecked=0, Total=32942 [2023-12-21 09:48:27,123 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 9554 mSDsluCounter, 10126 mSDsCounter, 0 mSdLazyCounter, 28958 mSolverCounterSat, 3917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9591 SdHoareTripleChecker+Valid, 10690 SdHoareTripleChecker+Invalid, 32875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3917 IncrementalHoareTripleChecker+Valid, 28958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-21 09:48:27,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9591 Valid, 10690 Invalid, 32875 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3917 Valid, 28958 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2023-12-21 09:48:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588378 states. [2023-12-21 09:48:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588378 to 391665. [2023-12-21 09:48:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391665 states, 330508 states have (on average 1.6117491861013955) internal successors, (532696), 330318 states have internal predecessors, (532696), 60994 states have call successors, (60994), 138 states have call predecessors, (60994), 162 states have return successors, (84973), 61220 states have call predecessors, (84973), 60988 states have call successors, (84973) [2023-12-21 09:48:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391665 states to 391665 states and 678663 transitions. [2023-12-21 09:48:50,978 INFO L78 Accepts]: Start accepts. Automaton has 391665 states and 678663 transitions. Word has length 165 [2023-12-21 09:48:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:48:50,979 INFO L495 AbstractCegarLoop]: Abstraction has 391665 states and 678663 transitions. [2023-12-21 09:48:50,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 8.3) internal successors, (249), 24 states have internal predecessors, (249), 9 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2023-12-21 09:48:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 391665 states and 678663 transitions.