/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_spec9_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 10:06:50,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 10:06:50,338 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 10:06:50,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 10:06:50,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 10:06:50,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 10:06:50,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 10:06:50,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 10:06:50,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 10:06:50,368 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 10:06:50,369 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 10:06:50,369 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 10:06:50,369 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 10:06:50,370 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 10:06:50,370 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 10:06:50,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 10:06:50,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 10:06:50,371 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 10:06:50,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 10:06:50,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 10:06:50,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 10:06:50,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 10:06:50,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 10:06:50,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 10:06:50,373 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 10:06:50,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 10:06:50,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 10:06:50,373 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 10:06:50,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 10:06:50,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 10:06:50,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 10:06:50,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 10:06:50,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:06:50,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 10:06:50,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 10:06:50,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 10:06:50,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 10:06:50,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 10:06:50,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 10:06:50,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 10:06:50,375 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 10:06:50,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 10:06:50,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 10:06:50,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 10:06:50,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 10:06:50,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 10:06:50,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 10:06:50,583 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 10:06:50,583 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 10:06:50,584 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product28.cil.c [2023-12-21 10:06:51,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 10:06:51,930 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 10:06:51,930 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product28.cil.c [2023-12-21 10:06:51,948 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008818cbe/e5a097bb851a4d84b8a7f73115858136/FLAG956af871b [2023-12-21 10:06:51,959 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008818cbe/e5a097bb851a4d84b8a7f73115858136 [2023-12-21 10:06:51,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 10:06:51,962 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 10:06:51,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 10:06:51,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 10:06:51,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 10:06:51,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:06:51" (1/1) ... [2023-12-21 10:06:51,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fbcb609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:51, skipping insertion in model container [2023-12-21 10:06:51,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:06:51" (1/1) ... [2023-12-21 10:06:52,029 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 10:06:52,476 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_spec9_product28.cil.c[63802,63815] [2023-12-21 10:06:52,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:06:52,493 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 10:06:52,499 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptForward_spec.i","") [48] [2023-12-21 10:06:52,500 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [105] [2023-12-21 10:06:52,501 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [122] [2023-12-21 10:06:52,501 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [160] [2023-12-21 10:06:52,501 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [505] [2023-12-21 10:06:52,501 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [726] [2023-12-21 10:06:52,501 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1801] [2023-12-21 10:06:52,502 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2167] [2023-12-21 10:06:52,502 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2432] [2023-12-21 10:06:52,502 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2571] [2023-12-21 10:06:52,502 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2968] [2023-12-21 10:06:52,583 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_spec9_product28.cil.c[63802,63815] [2023-12-21 10:06:52,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:06:52,615 INFO L206 MainTranslator]: Completed translation [2023-12-21 10:06:52,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52 WrapperNode [2023-12-21 10:06:52,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 10:06:52,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 10:06:52,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 10:06:52,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 10:06:52,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,727 INFO L138 Inliner]: procedures = 129, calls = 199, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 860 [2023-12-21 10:06:52,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 10:06:52,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 10:06:52,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 10:06:52,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 10:06:52,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,792 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,810 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 10:06:52,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,829 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,831 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 10:06:52,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 10:06:52,837 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 10:06:52,837 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 10:06:52,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (1/1) ... [2023-12-21 10:06:52,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:06:52,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:06:52,897 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 10:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-21 10:06:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-21 10:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-21 10:06:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-21 10:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-21 10:06:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-21 10:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-21 10:06:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-21 10:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-21 10:06:52,931 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-21 10:06:52,931 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-21 10:06:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-21 10:06:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-21 10:06:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-21 10:06:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-21 10:06:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-21 10:06:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-21 10:06:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-21 10:06:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-21 10:06:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-21 10:06:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-21 10:06:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-21 10:06:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-21 10:06:52,932 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-21 10:06:52,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 10:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-21 10:06:52,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-21 10:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-21 10:06:52,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-21 10:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-21 10:06:52,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-21 10:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-21 10:06:52,933 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-21 10:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-21 10:06:52,933 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-21 10:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-21 10:06:52,933 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-21 10:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-21 10:06:52,933 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-21 10:06:52,933 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-21 10:06:52,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-21 10:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-21 10:06:52,934 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-21 10:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 10:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 10:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 10:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 10:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-21 10:06:52,934 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-21 10:06:52,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 10:06:52,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 10:06:52,926 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 10:06:53,092 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 10:06:53,094 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 10:06:53,667 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 10:06:53,701 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 10:06:53,702 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 10:06:53,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:06:53 BoogieIcfgContainer [2023-12-21 10:06:53,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 10:06:53,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 10:06:53,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 10:06:53,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 10:06:53,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:06:51" (1/3) ... [2023-12-21 10:06:53,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a138fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:06:53, skipping insertion in model container [2023-12-21 10:06:53,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:52" (2/3) ... [2023-12-21 10:06:53,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a138fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:06:53, skipping insertion in model container [2023-12-21 10:06:53,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:06:53" (3/3) ... [2023-12-21 10:06:53,708 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product28.cil.c [2023-12-21 10:06:53,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 10:06:53,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 10:06:53,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 10:06:53,757 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;@7f82050, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 10:06:53,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 10:06:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 229 states have (on average 1.5764192139737991) internal successors, (361), 233 states have internal predecessors, (361), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 10:06:53,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 10:06:53,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:06:53,773 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:06:53,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:06:53,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:06:53,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1674852989, now seen corresponding path program 1 times [2023-12-21 10:06:53,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:06:53,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093039411] [2023-12-21 10:06:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:53,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:06:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:06:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:06:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:06:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:06:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:06:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:06:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 10:06:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 10:06:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 10:06:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:06:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 10:06:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 10:06:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 10:06:54,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:06:54,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093039411] [2023-12-21 10:06:54,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093039411] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:06:54,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919249659] [2023-12-21 10:06:54,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:54,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:06:54,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:06:54,348 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 10:06:54,363 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 10:06:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:54,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 10:06:54,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:06:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:06:54,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:06:54,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919249659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:06:54,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:06:54,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2023-12-21 10:06:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316751996] [2023-12-21 10:06:54,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:06:54,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 10:06:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:06:54,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 10:06:54,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 10:06:54,659 INFO L87 Difference]: Start difference. First operand has 303 states, 229 states have (on average 1.5764192139737991) internal successors, (361), 233 states have internal predecessors, (361), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:06:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:06:54,742 INFO L93 Difference]: Finished difference Result 465 states and 692 transitions. [2023-12-21 10:06:54,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 10:06:54,756 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 92 [2023-12-21 10:06:54,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:06:54,765 INFO L225 Difference]: With dead ends: 465 [2023-12-21 10:06:54,765 INFO L226 Difference]: Without dead ends: 300 [2023-12-21 10:06:54,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 10:06:54,781 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:06:54,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 446 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:06:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-21 10:06:54,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-12-21 10:06:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 227 states have (on average 1.5594713656387664) internal successors, (354), 230 states have internal predecessors, (354), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-21 10:06:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 453 transitions. [2023-12-21 10:06:54,833 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 453 transitions. Word has length 92 [2023-12-21 10:06:54,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:06:54,834 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 453 transitions. [2023-12-21 10:06:54,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:06:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 453 transitions. [2023-12-21 10:06:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 10:06:54,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:06:54,838 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:06:54,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 10:06:55,044 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 10:06:55,045 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:06:55,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:06:55,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2120346786, now seen corresponding path program 1 times [2023-12-21 10:06:55,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:06:55,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050086402] [2023-12-21 10:06:55,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:55,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:06:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:06:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:06:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:06:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:06:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:06:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:06:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 10:06:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 10:06:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 10:06:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 10:06:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 10:06:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 10:06:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 10:06:55,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:06:55,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050086402] [2023-12-21 10:06:55,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050086402] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:06:55,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074948690] [2023-12-21 10:06:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:55,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:06:55,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:06:55,326 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 10:06:55,352 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 10:06:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:55,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 10:06:55,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:06:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:06:55,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:06:55,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074948690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:06:55,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:06:55,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-21 10:06:55,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251458389] [2023-12-21 10:06:55,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:06:55,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 10:06:55,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:06:55,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 10:06:55,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:06:55,635 INFO L87 Difference]: Start difference. First operand 300 states and 453 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:06:55,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:06:55,717 INFO L93 Difference]: Finished difference Result 461 states and 679 transitions. [2023-12-21 10:06:55,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 10:06:55,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 93 [2023-12-21 10:06:55,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:06:55,724 INFO L225 Difference]: With dead ends: 461 [2023-12-21 10:06:55,725 INFO L226 Difference]: Without dead ends: 302 [2023-12-21 10:06:55,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 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 10:06:55,728 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 0 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:06:55,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 885 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:06:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-21 10:06:55,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2023-12-21 10:06:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 229 states have (on average 1.554585152838428) internal successors, (356), 232 states have internal predecessors, (356), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-21 10:06:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 455 transitions. [2023-12-21 10:06:55,756 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 455 transitions. Word has length 93 [2023-12-21 10:06:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:06:55,757 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 455 transitions. [2023-12-21 10:06:55,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:06:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 455 transitions. [2023-12-21 10:06:55,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 10:06:55,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:06:55,767 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:06:55,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 10:06:55,973 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 10:06:55,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:06:55,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:06:55,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2013310588, now seen corresponding path program 1 times [2023-12-21 10:06:55,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:06:55,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11919282] [2023-12-21 10:06:55,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:55,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:06:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:06:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:06:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:06:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:06:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:06:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:06:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 10:06:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 10:06:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:06:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 10:06:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 10:06:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 10:06:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:06:56,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:06:56,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11919282] [2023-12-21 10:06:56,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11919282] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:06:56,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136547138] [2023-12-21 10:06:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:56,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:06:56,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:06:56,203 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 10:06:56,229 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 10:06:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 10:06:56,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:06:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:06:56,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:06:56,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136547138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:06:56,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:06:56,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-21 10:06:56,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621082323] [2023-12-21 10:06:56,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:06:56,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 10:06:56,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:06:56,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 10:06:56,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:06:56,455 INFO L87 Difference]: Start difference. First operand 302 states and 455 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:06:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:06:56,504 INFO L93 Difference]: Finished difference Result 630 states and 962 transitions. [2023-12-21 10:06:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 10:06:56,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2023-12-21 10:06:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:06:56,507 INFO L225 Difference]: With dead ends: 630 [2023-12-21 10:06:56,507 INFO L226 Difference]: Without dead ends: 350 [2023-12-21 10:06:56,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 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 10:06:56,510 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 95 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:06:56,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 849 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:06:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-21 10:06:56,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 345. [2023-12-21 10:06:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 261 states have (on average 1.5670498084291187) internal successors, (409), 264 states have internal predecessors, (409), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-21 10:06:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 530 transitions. [2023-12-21 10:06:56,536 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 530 transitions. Word has length 98 [2023-12-21 10:06:56,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:06:56,537 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 530 transitions. [2023-12-21 10:06:56,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:06:56,537 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 530 transitions. [2023-12-21 10:06:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 10:06:56,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:06:56,543 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:06:56,566 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 10:06:56,748 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 10:06:56,749 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:06:56,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:06:56,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1889702237, now seen corresponding path program 1 times [2023-12-21 10:06:56,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:06:56,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566365432] [2023-12-21 10:06:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:56,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:06:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:06:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:06:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:06:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:06:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:06:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:06:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 10:06:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 10:06:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 10:06:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 10:06:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 10:06:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 10:06:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:06:56,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:06:56,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566365432] [2023-12-21 10:06:56,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566365432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:06:56,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375120095] [2023-12-21 10:06:56,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:56,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:06:56,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:06:56,920 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 10:06:56,953 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 10:06:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 10:06:57,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:06:57,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 10:06:57,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:06:57,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375120095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:06:57,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:06:57,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-21 10:06:57,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240770471] [2023-12-21 10:06:57,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:06:57,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:06:57,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:06:57,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:06:57,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 10:06:57,230 INFO L87 Difference]: Start difference. First operand 345 states and 530 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 10:06:57,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:06:57,305 INFO L93 Difference]: Finished difference Result 685 states and 1054 transitions. [2023-12-21 10:06:57,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:06:57,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2023-12-21 10:06:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:06:57,308 INFO L225 Difference]: With dead ends: 685 [2023-12-21 10:06:57,308 INFO L226 Difference]: Without dead ends: 347 [2023-12-21 10:06:57,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-21 10:06:57,309 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 8 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:06:57,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1725 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:06:57,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-21 10:06:57,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-12-21 10:06:57,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 262 states have (on average 1.5648854961832062) internal successors, (410), 266 states have internal predecessors, (410), 61 states have call successors, (61), 22 states have call predecessors, (61), 23 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2023-12-21 10:06:57,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 533 transitions. [2023-12-21 10:06:57,320 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 533 transitions. Word has length 99 [2023-12-21 10:06:57,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:06:57,321 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 533 transitions. [2023-12-21 10:06:57,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 10:06:57,321 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 533 transitions. [2023-12-21 10:06:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 10:06:57,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:06:57,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:06:57,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 10:06:57,531 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 10:06:57,532 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:06:57,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:06:57,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1130946836, now seen corresponding path program 1 times [2023-12-21 10:06:57,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:06:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119321631] [2023-12-21 10:06:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:06:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:06:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:06:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:06:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:06:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 10:06:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 10:06:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 10:06:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 10:06:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 10:06:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 10:06:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 10:06:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 10:06:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 10:06:57,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:06:57,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119321631] [2023-12-21 10:06:57,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119321631] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:06:57,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127233920] [2023-12-21 10:06:57,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:57,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:06:57,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:06:57,722 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 10:06:57,745 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 10:06:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:57,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 10:06:57,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:06:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 10:06:57,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:06:57,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127233920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:06:57,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:06:57,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-21 10:06:57,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309112573] [2023-12-21 10:06:57,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:06:57,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:06:57,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:06:57,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:06:57,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:06:57,972 INFO L87 Difference]: Start difference. First operand 347 states and 533 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 10:06:58,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:06:58,039 INFO L93 Difference]: Finished difference Result 687 states and 1059 transitions. [2023-12-21 10:06:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:06:58,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2023-12-21 10:06:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:06:58,041 INFO L225 Difference]: With dead ends: 687 [2023-12-21 10:06:58,041 INFO L226 Difference]: Without dead ends: 349 [2023-12-21 10:06:58,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-21 10:06:58,043 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 8 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:06:58,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1711 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:06:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-21 10:06:58,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2023-12-21 10:06:58,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 263 states have (on average 1.5627376425855513) internal successors, (411), 268 states have internal predecessors, (411), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2023-12-21 10:06:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 539 transitions. [2023-12-21 10:06:58,052 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 539 transitions. Word has length 100 [2023-12-21 10:06:58,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:06:58,052 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 539 transitions. [2023-12-21 10:06:58,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 10:06:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 539 transitions. [2023-12-21 10:06:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 10:06:58,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:06:58,054 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:06:58,069 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 10:06:58,260 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 10:06:58,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:06:58,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:06:58,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1954591359, now seen corresponding path program 1 times [2023-12-21 10:06:58,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:06:58,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608152102] [2023-12-21 10:06:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:06:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:06:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:06:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:06:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:06:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:06:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 10:06:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 10:06:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 10:06:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 10:06:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 10:06:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 10:06:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 10:06:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:06:58,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:06:58,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608152102] [2023-12-21 10:06:58,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608152102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:06:58,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:06:58,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 10:06:58,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758981067] [2023-12-21 10:06:58,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:06:58,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 10:06:58,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:06:58,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 10:06:58,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 10:06:58,380 INFO L87 Difference]: Start difference. First operand 349 states and 539 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 10:06:59,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:06:59,439 INFO L93 Difference]: Finished difference Result 741 states and 1152 transitions. [2023-12-21 10:06:59,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:06:59,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2023-12-21 10:06:59,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:06:59,441 INFO L225 Difference]: With dead ends: 741 [2023-12-21 10:06:59,441 INFO L226 Difference]: Without dead ends: 411 [2023-12-21 10:06:59,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:06:59,443 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 759 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:06:59,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 812 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 10:06:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-21 10:06:59,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 349. [2023-12-21 10:06:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 263 states have (on average 1.5627376425855513) internal successors, (411), 268 states have internal predecessors, (411), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2023-12-21 10:06:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 538 transitions. [2023-12-21 10:06:59,477 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 538 transitions. Word has length 101 [2023-12-21 10:06:59,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:06:59,477 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 538 transitions. [2023-12-21 10:06:59,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 10:06:59,477 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 538 transitions. [2023-12-21 10:06:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 10:06:59,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:06:59,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 10:06:59,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 10:06:59,479 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:06:59,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:06:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2040742124, now seen corresponding path program 2 times [2023-12-21 10:06:59,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:06:59,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499713630] [2023-12-21 10:06:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:06:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:06:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:06:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:06:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:06:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:06:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 10:06:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 10:06:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 10:06:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 10:06:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:06:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 10:06:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 10:06:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:06:59,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:06:59,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499713630] [2023-12-21 10:06:59,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499713630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:06:59,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:06:59,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 10:06:59,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434231274] [2023-12-21 10:06:59,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:06:59,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 10:06:59,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:06:59,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 10:06:59,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 10:06:59,627 INFO L87 Difference]: Start difference. First operand 349 states and 538 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 10:07:00,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:00,730 INFO L93 Difference]: Finished difference Result 743 states and 1155 transitions. [2023-12-21 10:07:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:07:00,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2023-12-21 10:07:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:00,733 INFO L225 Difference]: With dead ends: 743 [2023-12-21 10:07:00,733 INFO L226 Difference]: Without dead ends: 413 [2023-12-21 10:07:00,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:07:00,734 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 765 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:00,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 812 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 10:07:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-21 10:07:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 351. [2023-12-21 10:07:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 264 states have (on average 1.5606060606060606) internal successors, (412), 270 states have internal predecessors, (412), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2023-12-21 10:07:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 541 transitions. [2023-12-21 10:07:00,750 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 541 transitions. Word has length 102 [2023-12-21 10:07:00,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:00,750 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 541 transitions. [2023-12-21 10:07:00,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 10:07:00,750 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 541 transitions. [2023-12-21 10:07:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 10:07:00,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:00,752 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:00,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 10:07:00,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:00,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:00,752 INFO L85 PathProgramCache]: Analyzing trace with hash 534562148, now seen corresponding path program 1 times [2023-12-21 10:07:00,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:00,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895352859] [2023-12-21 10:07:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:00,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 10:07:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 10:07:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:07:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 10:07:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 10:07:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 10:07:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 10:07:00,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:00,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895352859] [2023-12-21 10:07:00,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895352859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:00,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:00,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 10:07:00,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846082061] [2023-12-21 10:07:00,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:00,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 10:07:00,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:00,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 10:07:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 10:07:00,895 INFO L87 Difference]: Start difference. First operand 351 states and 541 transitions. Second operand has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 10:07:02,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:02,552 INFO L93 Difference]: Finished difference Result 741 states and 1150 transitions. [2023-12-21 10:07:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 10:07:02,553 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2023-12-21 10:07:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:02,554 INFO L225 Difference]: With dead ends: 741 [2023-12-21 10:07:02,554 INFO L226 Difference]: Without dead ends: 413 [2023-12-21 10:07:02,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-21 10:07:02,556 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 752 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 3144 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 3144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:02,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1163 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 3144 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 10:07:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-21 10:07:02,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 351. [2023-12-21 10:07:02,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 264 states have (on average 1.5606060606060606) internal successors, (412), 270 states have internal predecessors, (412), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2023-12-21 10:07:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 540 transitions. [2023-12-21 10:07:02,571 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 540 transitions. Word has length 103 [2023-12-21 10:07:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:02,571 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 540 transitions. [2023-12-21 10:07:02,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.9) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 10:07:02,571 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 540 transitions. [2023-12-21 10:07:02,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 10:07:02,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:02,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 10:07:02,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 10:07:02,572 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:02,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:02,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1423589427, now seen corresponding path program 2 times [2023-12-21 10:07:02,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:02,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305847621] [2023-12-21 10:07:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:02,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 10:07:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 10:07:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 10:07:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 10:07:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 10:07:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 10:07:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 10:07:02,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:02,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305847621] [2023-12-21 10:07:02,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305847621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:02,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:02,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 10:07:02,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774818767] [2023-12-21 10:07:02,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:02,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 10:07:02,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:02,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 10:07:02,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 10:07:02,696 INFO L87 Difference]: Start difference. First operand 351 states and 540 transitions. Second operand has 11 states, 10 states have (on average 7.0) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 10:07:04,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:04,337 INFO L93 Difference]: Finished difference Result 743 states and 1156 transitions. [2023-12-21 10:07:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 10:07:04,338 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 104 [2023-12-21 10:07:04,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:04,340 INFO L225 Difference]: With dead ends: 743 [2023-12-21 10:07:04,340 INFO L226 Difference]: Without dead ends: 415 [2023-12-21 10:07:04,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-21 10:07:04,341 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 774 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:04,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1163 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 3079 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 10:07:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-21 10:07:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 353. [2023-12-21 10:07:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 265 states have (on average 1.558490566037736) internal successors, (413), 272 states have internal predecessors, (413), 61 states have call successors, (61), 22 states have call predecessors, (61), 26 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2023-12-21 10:07:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 546 transitions. [2023-12-21 10:07:04,362 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 546 transitions. Word has length 104 [2023-12-21 10:07:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:04,362 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 546 transitions. [2023-12-21 10:07:04,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 10:07:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 546 transitions. [2023-12-21 10:07:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 10:07:04,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:04,364 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:04,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 10:07:04,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:04,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash 230255241, now seen corresponding path program 1 times [2023-12-21 10:07:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:04,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358388295] [2023-12-21 10:07:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 10:07:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 10:07:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 10:07:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 10:07:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 10:07:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 10:07:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:04,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:04,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358388295] [2023-12-21 10:07:04,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358388295] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:07:04,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100901471] [2023-12-21 10:07:04,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:04,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:07:04,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:07:04,526 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 10:07:04,550 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 10:07:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:04,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 10:07:04,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:07:04,748 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:04,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:07:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:04,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100901471] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:07:04,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:07:04,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-12-21 10:07:04,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694524212] [2023-12-21 10:07:04,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:07:04,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 10:07:04,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:04,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 10:07:04,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:07:04,809 INFO L87 Difference]: Start difference. First operand 353 states and 546 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 10:07:06,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:06,241 INFO L93 Difference]: Finished difference Result 884 states and 1441 transitions. [2023-12-21 10:07:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 10:07:06,241 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 105 [2023-12-21 10:07:06,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:06,245 INFO L225 Difference]: With dead ends: 884 [2023-12-21 10:07:06,245 INFO L226 Difference]: Without dead ends: 725 [2023-12-21 10:07:06,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:07:06,246 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1044 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 2750 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:06,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 1266 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2750 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 10:07:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2023-12-21 10:07:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 648. [2023-12-21 10:07:06,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 496 states have (on average 1.6189516129032258) internal successors, (803), 503 states have internal predecessors, (803), 125 states have call successors, (125), 22 states have call predecessors, (125), 26 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2023-12-21 10:07:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1074 transitions. [2023-12-21 10:07:06,271 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1074 transitions. Word has length 105 [2023-12-21 10:07:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:06,272 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 1074 transitions. [2023-12-21 10:07:06,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (28), 5 states have call predecessors, (28), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-21 10:07:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1074 transitions. [2023-12-21 10:07:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 10:07:06,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:06,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:06,292 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 10:07:06,485 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 10:07:06,486 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:06,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1424036646, now seen corresponding path program 1 times [2023-12-21 10:07:06,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:06,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408427485] [2023-12-21 10:07:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:06,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 10:07:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:07:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 10:07:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 10:07:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 10:07:06,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 10:07:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:06,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:06,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408427485] [2023-12-21 10:07:06,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408427485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:06,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:06,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:07:06,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298495630] [2023-12-21 10:07:06,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:06,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:07:06,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:06,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:07:06,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:07:06,570 INFO L87 Difference]: Start difference. First operand 648 states and 1074 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:07,284 INFO L93 Difference]: Finished difference Result 1595 states and 2710 transitions. [2023-12-21 10:07:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:07:07,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2023-12-21 10:07:07,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:07,306 INFO L225 Difference]: With dead ends: 1595 [2023-12-21 10:07:07,307 INFO L226 Difference]: Without dead ends: 1007 [2023-12-21 10:07:07,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:07:07,318 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 828 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:07,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 608 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:07:07,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2023-12-21 10:07:07,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 940. [2023-12-21 10:07:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 724 states have (on average 1.6298342541436464) internal successors, (1180), 731 states have internal predecessors, (1180), 189 states have call successors, (189), 22 states have call predecessors, (189), 26 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2023-12-21 10:07:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1589 transitions. [2023-12-21 10:07:07,393 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1589 transitions. Word has length 111 [2023-12-21 10:07:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:07,394 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1589 transitions. [2023-12-21 10:07:07,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1589 transitions. [2023-12-21 10:07:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 10:07:07,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:07,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:07,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 10:07:07,397 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:07,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:07,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2086109936, now seen corresponding path program 1 times [2023-12-21 10:07:07,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:07,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626676588] [2023-12-21 10:07:07,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:07,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 10:07:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 10:07:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 10:07:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 10:07:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 10:07:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 10:07:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:07,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:07,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626676588] [2023-12-21 10:07:07,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626676588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:07,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:07,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:07:07,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647363784] [2023-12-21 10:07:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:07,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:07:07,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:07,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:07:07,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:07:07,501 INFO L87 Difference]: Start difference. First operand 940 states and 1589 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:08,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:08,137 INFO L93 Difference]: Finished difference Result 2292 states and 3937 transitions. [2023-12-21 10:07:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:07:08,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2023-12-21 10:07:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:08,144 INFO L225 Difference]: With dead ends: 2292 [2023-12-21 10:07:08,144 INFO L226 Difference]: Without dead ends: 1462 [2023-12-21 10:07:08,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:07:08,147 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 854 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:08,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 571 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 10:07:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-12-21 10:07:08,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1395. [2023-12-21 10:07:08,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1084 states have (on average 1.636531365313653) internal successors, (1774), 1091 states have internal predecessors, (1774), 284 states have call successors, (284), 22 states have call predecessors, (284), 26 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2023-12-21 10:07:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2373 transitions. [2023-12-21 10:07:08,191 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2373 transitions. Word has length 112 [2023-12-21 10:07:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:08,191 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 2373 transitions. [2023-12-21 10:07:08,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:08,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2373 transitions. [2023-12-21 10:07:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 10:07:08,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:08,196 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:08,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 10:07:08,196 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:08,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:08,197 INFO L85 PathProgramCache]: Analyzing trace with hash 218611272, now seen corresponding path program 1 times [2023-12-21 10:07:08,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:08,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141376604] [2023-12-21 10:07:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:08,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 10:07:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 10:07:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:07:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 10:07:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 10:07:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 10:07:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:08,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:08,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:08,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141376604] [2023-12-21 10:07:08,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141376604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:08,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:08,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:07:08,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774295195] [2023-12-21 10:07:08,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:08,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:07:08,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:08,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:07:08,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:07:08,260 INFO L87 Difference]: Start difference. First operand 1395 states and 2373 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:08,936 INFO L93 Difference]: Finished difference Result 3310 states and 5749 transitions. [2023-12-21 10:07:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:07:08,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2023-12-21 10:07:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:08,945 INFO L225 Difference]: With dead ends: 3310 [2023-12-21 10:07:08,945 INFO L226 Difference]: Without dead ends: 2145 [2023-12-21 10:07:08,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:07:08,961 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 836 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:08,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 571 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:07:08,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2023-12-21 10:07:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2078. [2023-12-21 10:07:09,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 1644 states have (on average 1.6423357664233578) internal successors, (2700), 1651 states have internal predecessors, (2700), 407 states have call successors, (407), 22 states have call predecessors, (407), 26 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2023-12-21 10:07:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 3561 transitions. [2023-12-21 10:07:09,031 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 3561 transitions. Word has length 113 [2023-12-21 10:07:09,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:09,031 INFO L495 AbstractCegarLoop]: Abstraction has 2078 states and 3561 transitions. [2023-12-21 10:07:09,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:09,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 3561 transitions. [2023-12-21 10:07:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 10:07:09,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:09,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:09,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 10:07:09,040 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:09,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:09,040 INFO L85 PathProgramCache]: Analyzing trace with hash 84901553, now seen corresponding path program 1 times [2023-12-21 10:07:09,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:09,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389015095] [2023-12-21 10:07:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:09,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 10:07:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 10:07:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 10:07:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 10:07:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 10:07:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 10:07:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:09,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:09,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389015095] [2023-12-21 10:07:09,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389015095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:09,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:09,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:07:09,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331571944] [2023-12-21 10:07:09,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:09,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:07:09,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:09,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:07:09,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:07:09,109 INFO L87 Difference]: Start difference. First operand 2078 states and 3561 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:09,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:09,810 INFO L93 Difference]: Finished difference Result 4880 states and 8554 transitions. [2023-12-21 10:07:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:07:09,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-12-21 10:07:09,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:09,825 INFO L225 Difference]: With dead ends: 4880 [2023-12-21 10:07:09,825 INFO L226 Difference]: Without dead ends: 3229 [2023-12-21 10:07:09,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:07:09,831 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 828 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:09,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 570 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:07:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2023-12-21 10:07:09,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 3162. [2023-12-21 10:07:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3162 states, 2549 states have (on average 1.6461357395056886) internal successors, (4196), 2556 states have internal predecessors, (4196), 586 states have call successors, (586), 22 states have call predecessors, (586), 26 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2023-12-21 10:07:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 5441 transitions. [2023-12-21 10:07:09,978 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 5441 transitions. Word has length 114 [2023-12-21 10:07:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:09,978 INFO L495 AbstractCegarLoop]: Abstraction has 3162 states and 5441 transitions. [2023-12-21 10:07:09,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:09,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 5441 transitions. [2023-12-21 10:07:09,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 10:07:09,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:09,987 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:09,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 10:07:09,987 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:09,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash 815130500, now seen corresponding path program 1 times [2023-12-21 10:07:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:09,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653294862] [2023-12-21 10:07:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:09,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 10:07:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 10:07:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 10:07:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 10:07:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 10:07:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 10:07:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:10,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:10,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653294862] [2023-12-21 10:07:10,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653294862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:10,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:10,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:07:10,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632765896] [2023-12-21 10:07:10,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:10,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:07:10,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:07:10,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:07:10,061 INFO L87 Difference]: Start difference. First operand 3162 states and 5441 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:11,048 INFO L93 Difference]: Finished difference Result 7711 states and 13566 transitions. [2023-12-21 10:07:11,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:07:11,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2023-12-21 10:07:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:11,069 INFO L225 Difference]: With dead ends: 7711 [2023-12-21 10:07:11,069 INFO L226 Difference]: Without dead ends: 5199 [2023-12-21 10:07:11,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:07:11,077 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 822 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:11,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 596 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:07:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2023-12-21 10:07:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 5132. [2023-12-21 10:07:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5132 states, 4143 states have (on average 1.6381848901762008) internal successors, (6787), 4150 states have internal predecessors, (6787), 962 states have call successors, (962), 22 states have call predecessors, (962), 26 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2023-12-21 10:07:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 8828 transitions. [2023-12-21 10:07:11,316 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 8828 transitions. Word has length 115 [2023-12-21 10:07:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:11,316 INFO L495 AbstractCegarLoop]: Abstraction has 5132 states and 8828 transitions. [2023-12-21 10:07:11,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 8828 transitions. [2023-12-21 10:07:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 10:07:11,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:11,330 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:11,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 10:07:11,330 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:11,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:11,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1606121099, now seen corresponding path program 1 times [2023-12-21 10:07:11,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:11,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442841777] [2023-12-21 10:07:11,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:11,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:07:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:07:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 10:07:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 10:07:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 10:07:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 10:07:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:11,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:11,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442841777] [2023-12-21 10:07:11,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442841777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:11,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:11,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:07:11,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376101084] [2023-12-21 10:07:11,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:11,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:07:11,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:11,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:07:11,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:07:11,411 INFO L87 Difference]: Start difference. First operand 5132 states and 8828 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:12,356 INFO L93 Difference]: Finished difference Result 12692 states and 22314 transitions. [2023-12-21 10:07:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:07:12,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2023-12-21 10:07:12,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:12,393 INFO L225 Difference]: With dead ends: 12692 [2023-12-21 10:07:12,393 INFO L226 Difference]: Without dead ends: 8576 [2023-12-21 10:07:12,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:07:12,407 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 834 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:12,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 571 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 10:07:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8576 states. [2023-12-21 10:07:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8576 to 8509. [2023-12-21 10:07:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8509 states, 6914 states have (on average 1.6358113971651722) internal successors, (11310), 6921 states have internal predecessors, (11310), 1568 states have call successors, (1568), 22 states have call predecessors, (1568), 26 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2023-12-21 10:07:12,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8509 states to 8509 states and 14641 transitions. [2023-12-21 10:07:12,707 INFO L78 Accepts]: Start accepts. Automaton has 8509 states and 14641 transitions. Word has length 116 [2023-12-21 10:07:12,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:12,707 INFO L495 AbstractCegarLoop]: Abstraction has 8509 states and 14641 transitions. [2023-12-21 10:07:12,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8509 states and 14641 transitions. [2023-12-21 10:07:12,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 10:07:12,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:12,725 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:12,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 10:07:12,725 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:12,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:12,726 INFO L85 PathProgramCache]: Analyzing trace with hash 616158342, now seen corresponding path program 1 times [2023-12-21 10:07:12,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:12,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012731680] [2023-12-21 10:07:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:12,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 10:07:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 10:07:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 10:07:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 10:07:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 10:07:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 10:07:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:12,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:12,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012731680] [2023-12-21 10:07:12,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012731680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:12,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:12,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:07:12,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971238990] [2023-12-21 10:07:12,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:12,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:07:12,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:12,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:07:12,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:07:12,790 INFO L87 Difference]: Start difference. First operand 8509 states and 14641 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:13,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:13,858 INFO L93 Difference]: Finished difference Result 22044 states and 38713 transitions. [2023-12-21 10:07:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:07:13,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2023-12-21 10:07:13,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:13,904 INFO L225 Difference]: With dead ends: 22044 [2023-12-21 10:07:13,904 INFO L226 Difference]: Without dead ends: 14960 [2023-12-21 10:07:13,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:07:13,928 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 848 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:13,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 598 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 10:07:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14960 states. [2023-12-21 10:07:14,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14960 to 14893. [2023-12-21 10:07:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14893 states, 12095 states have (on average 1.6260438197602316) internal successors, (19667), 12102 states have internal predecessors, (19667), 2771 states have call successors, (2771), 22 states have call predecessors, (2771), 26 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2023-12-21 10:07:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14893 states to 14893 states and 25548 transitions. [2023-12-21 10:07:14,412 INFO L78 Accepts]: Start accepts. Automaton has 14893 states and 25548 transitions. Word has length 117 [2023-12-21 10:07:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:14,412 INFO L495 AbstractCegarLoop]: Abstraction has 14893 states and 25548 transitions. [2023-12-21 10:07:14,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:14,412 INFO L276 IsEmpty]: Start isEmpty. Operand 14893 states and 25548 transitions. [2023-12-21 10:07:14,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-21 10:07:14,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:14,435 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:14,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 10:07:14,435 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:14,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:14,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1350385334, now seen corresponding path program 1 times [2023-12-21 10:07:14,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:14,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460263367] [2023-12-21 10:07:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:14,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 10:07:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 10:07:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 10:07:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 10:07:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 10:07:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 10:07:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:14,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460263367] [2023-12-21 10:07:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460263367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:14,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:14,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:07:14,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905927210] [2023-12-21 10:07:14,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:14,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:07:14,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:07:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:07:14,506 INFO L87 Difference]: Start difference. First operand 14893 states and 25548 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:15,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:15,880 INFO L93 Difference]: Finished difference Result 39403 states and 69099 transitions. [2023-12-21 10:07:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:07:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2023-12-21 10:07:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:15,956 INFO L225 Difference]: With dead ends: 39403 [2023-12-21 10:07:15,957 INFO L226 Difference]: Without dead ends: 26527 [2023-12-21 10:07:15,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:07:15,980 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 840 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:15,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 571 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:07:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26527 states. [2023-12-21 10:07:16,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26527 to 26460. [2023-12-21 10:07:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26460 states, 21623 states have (on average 1.6219765989918142) internal successors, (35072), 21630 states have internal predecessors, (35072), 4810 states have call successors, (4810), 22 states have call predecessors, (4810), 26 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2023-12-21 10:07:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26460 states to 26460 states and 45305 transitions. [2023-12-21 10:07:16,810 INFO L78 Accepts]: Start accepts. Automaton has 26460 states and 45305 transitions. Word has length 118 [2023-12-21 10:07:16,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:16,810 INFO L495 AbstractCegarLoop]: Abstraction has 26460 states and 45305 transitions. [2023-12-21 10:07:16,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:16,810 INFO L276 IsEmpty]: Start isEmpty. Operand 26460 states and 45305 transitions. [2023-12-21 10:07:16,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 10:07:16,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:16,836 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:16,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 10:07:16,836 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:16,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:16,836 INFO L85 PathProgramCache]: Analyzing trace with hash 133765608, now seen corresponding path program 1 times [2023-12-21 10:07:16,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:16,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290472556] [2023-12-21 10:07:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:16,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 10:07:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 10:07:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 10:07:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 10:07:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 10:07:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 10:07:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:16,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:16,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290472556] [2023-12-21 10:07:16,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290472556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:16,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:16,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:07:16,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661268386] [2023-12-21 10:07:16,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:16,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:07:16,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:16,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:07:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:07:16,914 INFO L87 Difference]: Start difference. First operand 26460 states and 45305 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:18,878 INFO L93 Difference]: Finished difference Result 72015 states and 125523 transitions. [2023-12-21 10:07:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:07:18,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2023-12-21 10:07:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:19,081 INFO L225 Difference]: With dead ends: 72015 [2023-12-21 10:07:19,082 INFO L226 Difference]: Without dead ends: 48287 [2023-12-21 10:07:19,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:07:19,132 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 818 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:19,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 581 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:07:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48287 states. [2023-12-21 10:07:20,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48287 to 48220. [2023-12-21 10:07:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48220 states, 39668 states have (on average 1.6165170918624585) internal successors, (64124), 39675 states have internal predecessors, (64124), 8525 states have call successors, (8525), 22 states have call predecessors, (8525), 26 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2023-12-21 10:07:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48220 states to 48220 states and 82319 transitions. [2023-12-21 10:07:20,824 INFO L78 Accepts]: Start accepts. Automaton has 48220 states and 82319 transitions. Word has length 119 [2023-12-21 10:07:20,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:20,824 INFO L495 AbstractCegarLoop]: Abstraction has 48220 states and 82319 transitions. [2023-12-21 10:07:20,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:20,825 INFO L276 IsEmpty]: Start isEmpty. Operand 48220 states and 82319 transitions. [2023-12-21 10:07:20,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 10:07:20,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:20,851 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:20,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 10:07:20,851 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:20,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:20,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1145062230, now seen corresponding path program 1 times [2023-12-21 10:07:20,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:20,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829867232] [2023-12-21 10:07:20,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:20,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 10:07:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 10:07:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 10:07:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 10:07:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 10:07:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 10:07:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:20,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829867232] [2023-12-21 10:07:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829867232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:20,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:20,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:07:20,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594352778] [2023-12-21 10:07:20,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:07:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:20,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:07:20,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:07:20,921 INFO L87 Difference]: Start difference. First operand 48220 states and 82319 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:23,458 INFO L93 Difference]: Finished difference Result 89734 states and 156887 transitions. [2023-12-21 10:07:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:07:23,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2023-12-21 10:07:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:23,943 INFO L225 Difference]: With dead ends: 89734 [2023-12-21 10:07:23,943 INFO L226 Difference]: Without dead ends: 89575 [2023-12-21 10:07:23,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:07:23,978 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 814 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:23,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 571 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:07:24,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89575 states. [2023-12-21 10:07:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89575 to 89508. [2023-12-21 10:07:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89508 states, 74157 states have (on average 1.6094771902854754) internal successors, (119354), 74164 states have internal predecessors, (119354), 15324 states have call successors, (15324), 22 states have call predecessors, (15324), 26 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2023-12-21 10:07:27,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89508 states to 89508 states and 152193 transitions. [2023-12-21 10:07:27,262 INFO L78 Accepts]: Start accepts. Automaton has 89508 states and 152193 transitions. Word has length 120 [2023-12-21 10:07:27,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:27,263 INFO L495 AbstractCegarLoop]: Abstraction has 89508 states and 152193 transitions. [2023-12-21 10:07:27,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 10:07:27,263 INFO L276 IsEmpty]: Start isEmpty. Operand 89508 states and 152193 transitions. [2023-12-21 10:07:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 10:07:27,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:27,304 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:27,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 10:07:27,304 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:27,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1898950695, now seen corresponding path program 1 times [2023-12-21 10:07:27,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:27,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755941274] [2023-12-21 10:07:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:07:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:07:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 10:07:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 10:07:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 10:07:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 10:07:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:27,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:27,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755941274] [2023-12-21 10:07:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755941274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:27,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 10:07:27,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115838985] [2023-12-21 10:07:27,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:27,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 10:07:27,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:27,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 10:07:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-21 10:07:27,830 INFO L87 Difference]: Start difference. First operand 89508 states and 152193 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 11 states have internal predecessors, (82), 6 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-21 10:07:34,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:34,885 INFO L93 Difference]: Finished difference Result 178739 states and 315851 transitions. [2023-12-21 10:07:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 10:07:34,885 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 11 states have internal predecessors, (82), 6 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 121 [2023-12-21 10:07:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:35,897 INFO L225 Difference]: With dead ends: 178739 [2023-12-21 10:07:35,897 INFO L226 Difference]: Without dead ends: 178587 [2023-12-21 10:07:35,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=556, Invalid=1994, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 10:07:35,960 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 3372 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 5288 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3383 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 6388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:35,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3383 Valid, 1852 Invalid, 6388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5288 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-21 10:07:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178587 states. [2023-12-21 10:07:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178587 to 178282. [2023-12-21 10:07:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178282 states, 147773 states have (on average 1.6104430443991797) internal successors, (237980), 147677 states have internal predecessors, (237980), 30443 states have call successors, (30443), 59 states have call predecessors, (30443), 65 states have return successors, (38094), 30551 states have call predecessors, (38094), 30440 states have call successors, (38094) [2023-12-21 10:07:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178282 states to 178282 states and 306517 transitions. [2023-12-21 10:07:42,544 INFO L78 Accepts]: Start accepts. Automaton has 178282 states and 306517 transitions. Word has length 121 [2023-12-21 10:07:42,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:42,545 INFO L495 AbstractCegarLoop]: Abstraction has 178282 states and 306517 transitions. [2023-12-21 10:07:42,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 11 states have internal predecessors, (82), 6 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-21 10:07:42,545 INFO L276 IsEmpty]: Start isEmpty. Operand 178282 states and 306517 transitions. [2023-12-21 10:07:42,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 10:07:42,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:42,617 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:42,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 10:07:42,617 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:42,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:42,618 INFO L85 PathProgramCache]: Analyzing trace with hash -272809627, now seen corresponding path program 1 times [2023-12-21 10:07:42,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:42,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440728337] [2023-12-21 10:07:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:42,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:07:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:07:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 10:07:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 10:07:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 10:07:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 10:07:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:43,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:43,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440728337] [2023-12-21 10:07:43,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440728337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:43,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:43,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 10:07:43,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300132503] [2023-12-21 10:07:43,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:43,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 10:07:43,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 10:07:43,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-12-21 10:07:43,385 INFO L87 Difference]: Start difference. First operand 178282 states and 306517 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 10:07:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:07:49,063 INFO L93 Difference]: Finished difference Result 179263 states and 314505 transitions. [2023-12-21 10:07:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 10:07:49,063 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 122 [2023-12-21 10:07:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:07:50,035 INFO L225 Difference]: With dead ends: 179263 [2023-12-21 10:07:50,036 INFO L226 Difference]: Without dead ends: 178571 [2023-12-21 10:07:50,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2023-12-21 10:07:50,098 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1687 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 3415 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 4005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 3415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:07:50,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 1253 Invalid, 4005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 3415 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 10:07:50,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178571 states. [2023-12-21 10:07:55,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178571 to 178373. [2023-12-21 10:07:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178373 states, 147839 states have (on average 1.6103531544450382) internal successors, (238073), 147748 states have internal predecessors, (238073), 30465 states have call successors, (30465), 62 states have call predecessors, (30465), 68 states have return successors, (38125), 30571 states have call predecessors, (38125), 30462 states have call successors, (38125) [2023-12-21 10:07:57,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178373 states to 178373 states and 306663 transitions. [2023-12-21 10:07:57,039 INFO L78 Accepts]: Start accepts. Automaton has 178373 states and 306663 transitions. Word has length 122 [2023-12-21 10:07:57,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:07:57,039 INFO L495 AbstractCegarLoop]: Abstraction has 178373 states and 306663 transitions. [2023-12-21 10:07:57,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-21 10:07:57,039 INFO L276 IsEmpty]: Start isEmpty. Operand 178373 states and 306663 transitions. [2023-12-21 10:07:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 10:07:57,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:07:57,144 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:07:57,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 10:07:57,144 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:07:57,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:07:57,144 INFO L85 PathProgramCache]: Analyzing trace with hash 82214643, now seen corresponding path program 1 times [2023-12-21 10:07:57,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:07:57,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967571805] [2023-12-21 10:07:57,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:07:57,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:07:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:07:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:07:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:07:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:07:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:07:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:07:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:07:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:07:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 10:07:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 10:07:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 10:07:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 10:07:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:07:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:07:57,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:07:57,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967571805] [2023-12-21 10:07:57,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967571805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:07:57,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:07:57,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 10:07:57,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674895508] [2023-12-21 10:07:57,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:07:57,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 10:07:57,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:07:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 10:07:57,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2023-12-21 10:07:57,647 INFO L87 Difference]: Start difference. First operand 178373 states and 306663 transitions. Second operand has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 11 states have internal predecessors, (83), 6 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-21 10:08:09,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:08:09,446 INFO L93 Difference]: Finished difference Result 354718 states and 633681 transitions. [2023-12-21 10:08:09,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 10:08:09,447 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 11 states have internal predecessors, (83), 6 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 122 [2023-12-21 10:08:09,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:08:11,423 INFO L225 Difference]: With dead ends: 354718 [2023-12-21 10:08:11,423 INFO L226 Difference]: Without dead ends: 354382 [2023-12-21 10:08:11,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=579, Invalid=2073, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 10:08:11,582 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 3165 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 5806 mSolverCounterSat, 1012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3165 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 6818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 5806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:08:11,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3165 Valid, 1592 Invalid, 6818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1012 Valid, 5806 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-21 10:08:11,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354382 states. [2023-12-21 10:08:26,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354382 to 353690. [2023-12-21 10:08:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353690 states, 293262 states have (on average 1.6118146912999298) internal successors, (472684), 292910 states have internal predecessors, (472684), 60279 states have call successors, (60279), 136 states have call predecessors, (60279), 148 states have return successors, (84122), 60664 states have call predecessors, (84122), 60272 states have call successors, (84122) [2023-12-21 10:08:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353690 states to 353690 states and 617085 transitions. [2023-12-21 10:08:28,917 INFO L78 Accepts]: Start accepts. Automaton has 353690 states and 617085 transitions. Word has length 122 [2023-12-21 10:08:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:08:28,918 INFO L495 AbstractCegarLoop]: Abstraction has 353690 states and 617085 transitions. [2023-12-21 10:08:28,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 11 states have internal predecessors, (83), 6 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-21 10:08:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 353690 states and 617085 transitions. [2023-12-21 10:08:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 10:08:29,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:08:29,042 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:08:29,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 10:08:29,042 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:08:29,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:08:29,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1326979124, now seen corresponding path program 1 times [2023-12-21 10:08:29,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:08:29,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512082314] [2023-12-21 10:08:29,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:08:29,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:08:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:08:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:08:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:08:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:08:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:08:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:08:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:08:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:08:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 10:08:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 10:08:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 10:08:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 10:08:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:08:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:08:29,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:08:29,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512082314] [2023-12-21 10:08:29,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512082314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:08:29,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:08:29,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:08:29,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363178041] [2023-12-21 10:08:29,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:08:29,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:08:29,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:08:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:08:29,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:08:29,133 INFO L87 Difference]: Start difference. First operand 353690 states and 617085 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)