./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:13:00,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:13:00,530 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:13:00,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:13:00,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:13:00,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:13:00,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:13:00,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:13:00,554 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:13:00,554 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:13:00,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:13:00,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:13:00,555 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:13:00,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:13:00,555 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:13:00,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:13:00,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:13:00,556 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:13:00,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:13:00,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:13:00,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:13:00,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:13:00,562 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:13:00,562 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:13:00,562 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:13:00,562 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:13:00,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:13:00,563 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:13:00,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:13:00,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:13:00,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:13:00,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:13:00,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:13:00,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:13:00,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:13:00,564 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:13:00,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:13:00,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:13:00,564 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:13:00,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:13:00,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:13:00,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:13:00,565 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e61661fc2d58041f16237a6d2ff2f3d5f72c7660b85c9fdf3f096a51b709ec23 [2024-11-18 14:13:00,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:13:00,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:13:00,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:13:00,784 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:13:00,784 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:13:00,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2024-11-18 14:13:02,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:13:02,280 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:13:02,280 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c [2024-11-18 14:13:02,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a48409f93/1a8023f1f7f140faa67b7c5be6389307/FLAG6602e6b58 [2024-11-18 14:13:02,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a48409f93/1a8023f1f7f140faa67b7c5be6389307 [2024-11-18 14:13:02,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:13:02,318 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:13:02,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:13:02,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:13:02,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:13:02,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:02,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f5d2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02, skipping insertion in model container [2024-11-18 14:13:02,325 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:02,376 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:13:02,688 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2024-11-18 14:13:02,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:13:02,858 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:13:02,866 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2024-11-18 14:13:02,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [460] [2024-11-18 14:13:02,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [509] [2024-11-18 14:13:02,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [875] [2024-11-18 14:13:02,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptDecrypt_spec.i","") [893] [2024-11-18 14:13:02,868 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [943] [2024-11-18 14:13:02,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [952] [2024-11-18 14:13:02,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2031] [2024-11-18 14:13:02,869 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2260] [2024-11-18 14:13:02,870 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2551] [2024-11-18 14:13:02,871 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2850] [2024-11-18 14:13:02,904 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec6_product22.cil.c[21483,21496] [2024-11-18 14:13:02,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:13:02,993 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:13:02,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02 WrapperNode [2024-11-18 14:13:02,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:13:02,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:13:02,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:13:02,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:13:03,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,024 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,085 INFO L138 Inliner]: procedures = 129, calls = 195, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1012 [2024-11-18 14:13:03,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:13:03,086 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:13:03,086 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:13:03,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:13:03,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,104 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,124 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]. [2024-11-18 14:13:03,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,135 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,148 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,151 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,156 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:13:03,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:13:03,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:13:03,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:13:03,161 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (1/1) ... [2024-11-18 14:13:03,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:13:03,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:13:03,198 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) [2024-11-18 14:13:03,200 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 [2024-11-18 14:13:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-18 14:13:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-18 14:13:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-18 14:13:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-18 14:13:03,241 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-18 14:13:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-18 14:13:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-18 14:13:03,242 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-18 14:13:03,242 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-18 14:13:03,242 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-18 14:13:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-18 14:13:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-18 14:13:03,243 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-18 14:13:03,243 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-18 14:13:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-18 14:13:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-18 14:13:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-18 14:13:03,244 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-18 14:13:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-11-18 14:13:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-11-18 14:13:03,245 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-18 14:13:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-18 14:13:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:13:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-18 14:13:03,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-18 14:13:03,246 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-18 14:13:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-18 14:13:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-18 14:13:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-18 14:13:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-18 14:13:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-18 14:13:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-18 14:13:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-18 14:13:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-18 14:13:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-18 14:13:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-18 14:13:03,248 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-18 14:13:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-18 14:13:03,248 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-18 14:13:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:13:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:13:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:13:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:13:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-18 14:13:03,248 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-18 14:13:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:13:03,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:13:03,433 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:13:03,435 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:13:04,119 INFO L? ?]: Removed 434 outVars from TransFormulas that were not future-live. [2024-11-18 14:13:04,119 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:13:04,141 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:13:04,141 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:13:04,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:13:04 BoogieIcfgContainer [2024-11-18 14:13:04,144 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:13:04,146 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:13:04,147 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:13:04,149 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:13:04,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:13:02" (1/3) ... [2024-11-18 14:13:04,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b56417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:13:04, skipping insertion in model container [2024-11-18 14:13:04,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:13:02" (2/3) ... [2024-11-18 14:13:04,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b56417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:13:04, skipping insertion in model container [2024-11-18 14:13:04,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:13:04" (3/3) ... [2024-11-18 14:13:04,152 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product22.cil.c [2024-11-18 14:13:04,169 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:13:04,169 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:13:04,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:13:04,243 INFO L333 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, 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;@505cfa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:13:04,244 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:13:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 14:13:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 14:13:04,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:04,273 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1] [2024-11-18 14:13:04,274 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:04,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:04,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1302564075, now seen corresponding path program 1 times [2024-11-18 14:13:04,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:04,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163788965] [2024-11-18 14:13:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:04,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:13:04,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:04,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163788965] [2024-11-18 14:13:04,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163788965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:13:04,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903081726] [2024-11-18 14:13:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:04,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:04,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:13:04,870 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) [2024-11-18 14:13:04,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:13:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:05,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 14:13:05,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:13:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:13:05,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:13:05,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903081726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:05,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:13:05,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-18 14:13:05,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895494804] [2024-11-18 14:13:05,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:05,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 14:13:05,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:05,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 14:13:05,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:13:05,236 INFO L87 Difference]: Start difference. First operand has 334 states, 258 states have (on average 1.5155038759689923) internal successors, (391), 262 states have internal predecessors, (391), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:05,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:05,294 INFO L93 Difference]: Finished difference Result 509 states and 744 transitions. [2024-11-18 14:13:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 14:13:05,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 114 [2024-11-18 14:13:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:05,308 INFO L225 Difference]: With dead ends: 509 [2024-11-18 14:13:05,308 INFO L226 Difference]: Without dead ends: 327 [2024-11-18 14:13:05,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:13:05,317 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:05,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-18 14:13:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2024-11-18 14:13:05,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.507936507936508) internal successors, (380), 255 states have internal predecessors, (380), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-18 14:13:05,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 487 transitions. [2024-11-18 14:13:05,384 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 487 transitions. Word has length 114 [2024-11-18 14:13:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:05,387 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 487 transitions. [2024-11-18 14:13:05,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 487 transitions. [2024-11-18 14:13:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-18 14:13:05,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:05,393 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1] [2024-11-18 14:13:05,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 14:13:05,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 14:13:05,595 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:05,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:05,596 INFO L85 PathProgramCache]: Analyzing trace with hash 869367894, now seen corresponding path program 1 times [2024-11-18 14:13:05,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:05,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077375274] [2024-11-18 14:13:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:05,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:05,809 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 14:13:05,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:05,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077375274] [2024-11-18 14:13:05,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077375274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:13:05,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547821329] [2024-11-18 14:13:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:05,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:05,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:13:05,812 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) [2024-11-18 14:13:05,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:13:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:06,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:13:06,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:13:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:13:06,092 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:13:06,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547821329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:06,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:13:06,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:13:06,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151521415] [2024-11-18 14:13:06,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:06,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:06,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:06,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:06,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:13:06,099 INFO L87 Difference]: Start difference. First operand 327 states and 487 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:06,141 INFO L93 Difference]: Finished difference Result 499 states and 725 transitions. [2024-11-18 14:13:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:06,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 115 [2024-11-18 14:13:06,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:06,146 INFO L225 Difference]: With dead ends: 499 [2024-11-18 14:13:06,147 INFO L226 Difference]: Without dead ends: 330 [2024-11-18 14:13:06,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:13:06,149 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 1 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:06,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 968 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-18 14:13:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2024-11-18 14:13:06,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 254 states have (on average 1.5039370078740157) internal successors, (382), 257 states have internal predecessors, (382), 54 states have call successors, (54), 20 states have call predecessors, (54), 20 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-18 14:13:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 489 transitions. [2024-11-18 14:13:06,194 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 489 transitions. Word has length 115 [2024-11-18 14:13:06,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:06,194 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 489 transitions. [2024-11-18 14:13:06,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 489 transitions. [2024-11-18 14:13:06,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-18 14:13:06,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:06,196 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:06,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 14:13:06,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-18 14:13:06,397 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:06,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:06,399 INFO L85 PathProgramCache]: Analyzing trace with hash 946945952, now seen corresponding path program 1 times [2024-11-18 14:13:06,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:06,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478124656] [2024-11-18 14:13:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:06,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:13:06,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:06,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478124656] [2024-11-18 14:13:06,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478124656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:13:06,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194904303] [2024-11-18 14:13:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:06,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:06,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:13:06,592 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) [2024-11-18 14:13:06,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:13:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:06,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:13:06,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:13:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:13:06,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:13:06,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194904303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:06,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:13:06,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 14:13:06,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133833109] [2024-11-18 14:13:06,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:06,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:06,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:06,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:06,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:13:06,850 INFO L87 Difference]: Start difference. First operand 329 states and 489 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:06,883 INFO L93 Difference]: Finished difference Result 693 states and 1045 transitions. [2024-11-18 14:13:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:06,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2024-11-18 14:13:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:06,892 INFO L225 Difference]: With dead ends: 693 [2024-11-18 14:13:06,892 INFO L226 Difference]: Without dead ends: 391 [2024-11-18 14:13:06,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:13:06,899 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 115 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:06,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 948 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:06,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-18 14:13:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 383. [2024-11-18 14:13:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 297 states have (on average 1.5218855218855218) internal successors, (452), 300 states have internal predecessors, (452), 65 states have call successors, (65), 20 states have call predecessors, (65), 20 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-18 14:13:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 581 transitions. [2024-11-18 14:13:06,927 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 581 transitions. Word has length 124 [2024-11-18 14:13:06,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:06,928 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 581 transitions. [2024-11-18 14:13:06,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 581 transitions. [2024-11-18 14:13:06,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-18 14:13:06,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:06,932 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:06,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 14:13:07,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:07,133 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:07,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:07,134 INFO L85 PathProgramCache]: Analyzing trace with hash 469834409, now seen corresponding path program 1 times [2024-11-18 14:13:07,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:07,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744190769] [2024-11-18 14:13:07,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:07,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:13:07,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:07,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744190769] [2024-11-18 14:13:07,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744190769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:13:07,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919213035] [2024-11-18 14:13:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:07,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:07,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:13:07,285 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) [2024-11-18 14:13:07,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:13:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:07,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:13:07,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:13:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:13:07,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:13:07,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919213035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:07,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:13:07,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-18 14:13:07,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292854597] [2024-11-18 14:13:07,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:07,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:13:07,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:07,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:13:07,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:13:07,582 INFO L87 Difference]: Start difference. First operand 383 states and 581 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:07,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:07,632 INFO L93 Difference]: Finished difference Result 757 states and 1152 transitions. [2024-11-18 14:13:07,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:13:07,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2024-11-18 14:13:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:07,636 INFO L225 Difference]: With dead ends: 757 [2024-11-18 14:13:07,637 INFO L226 Difference]: Without dead ends: 385 [2024-11-18 14:13:07,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:13:07,640 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 2 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:07,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1905 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:07,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-18 14:13:07,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2024-11-18 14:13:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 298 states have (on average 1.5201342281879195) internal successors, (453), 302 states have internal predecessors, (453), 65 states have call successors, (65), 20 states have call predecessors, (65), 21 states have return successors, (66), 64 states have call predecessors, (66), 64 states have call successors, (66) [2024-11-18 14:13:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 584 transitions. [2024-11-18 14:13:07,658 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 584 transitions. Word has length 125 [2024-11-18 14:13:07,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:07,658 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 584 transitions. [2024-11-18 14:13:07,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 584 transitions. [2024-11-18 14:13:07,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-18 14:13:07,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:07,663 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:07,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:13:07,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:07,864 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:07,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash -183363360, now seen corresponding path program 1 times [2024-11-18 14:13:07,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:07,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629231747] [2024-11-18 14:13:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:07,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 14:13:07,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:07,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629231747] [2024-11-18 14:13:07,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629231747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:13:08,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062720457] [2024-11-18 14:13:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:08,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:08,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:13:08,005 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) [2024-11-18 14:13:08,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:13:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:08,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:13:08,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:13:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:13:08,334 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:13:08,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062720457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:08,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:13:08,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-18 14:13:08,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394369151] [2024-11-18 14:13:08,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:08,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:13:08,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:08,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:13:08,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:13:08,337 INFO L87 Difference]: Start difference. First operand 385 states and 584 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:08,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:08,389 INFO L93 Difference]: Finished difference Result 759 states and 1157 transitions. [2024-11-18 14:13:08,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:13:08,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2024-11-18 14:13:08,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:08,392 INFO L225 Difference]: With dead ends: 759 [2024-11-18 14:13:08,392 INFO L226 Difference]: Without dead ends: 387 [2024-11-18 14:13:08,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:13:08,397 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 2 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:08,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1891 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:08,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-18 14:13:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2024-11-18 14:13:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 299 states have (on average 1.5183946488294315) internal successors, (454), 304 states have internal predecessors, (454), 65 states have call successors, (65), 20 states have call predecessors, (65), 22 states have return successors, (71), 64 states have call predecessors, (71), 64 states have call successors, (71) [2024-11-18 14:13:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 590 transitions. [2024-11-18 14:13:08,413 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 590 transitions. Word has length 126 [2024-11-18 14:13:08,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:08,414 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 590 transitions. [2024-11-18 14:13:08,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:08,414 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 590 transitions. [2024-11-18 14:13:08,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-18 14:13:08,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:08,417 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:08,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 14:13:08,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:08,618 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:08,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:08,618 INFO L85 PathProgramCache]: Analyzing trace with hash 862212022, now seen corresponding path program 1 times [2024-11-18 14:13:08,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:08,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387489284] [2024-11-18 14:13:08,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:08,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:08,765 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:13:08,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:08,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387489284] [2024-11-18 14:13:08,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387489284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:08,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:08,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:13:08,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667561251] [2024-11-18 14:13:08,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:08,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:13:08,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:08,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:13:08,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:13:08,768 INFO L87 Difference]: Start difference. First operand 387 states and 590 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:08,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:08,806 INFO L93 Difference]: Finished difference Result 751 states and 1148 transitions. [2024-11-18 14:13:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:13:08,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 127 [2024-11-18 14:13:08,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:08,809 INFO L225 Difference]: With dead ends: 751 [2024-11-18 14:13:08,809 INFO L226 Difference]: Without dead ends: 387 [2024-11-18 14:13:08,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:13:08,814 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 2 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:08,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1909 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:08,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-18 14:13:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2024-11-18 14:13:08,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 299 states have (on average 1.5183946488294315) internal successors, (454), 304 states have internal predecessors, (454), 65 states have call successors, (65), 20 states have call predecessors, (65), 22 states have return successors, (70), 64 states have call predecessors, (70), 64 states have call successors, (70) [2024-11-18 14:13:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 589 transitions. [2024-11-18 14:13:08,833 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 589 transitions. Word has length 127 [2024-11-18 14:13:08,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:08,836 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 589 transitions. [2024-11-18 14:13:08,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:08,836 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 589 transitions. [2024-11-18 14:13:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-18 14:13:08,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:08,838 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:08,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:13:08,838 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:08,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:08,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1620412107, now seen corresponding path program 2 times [2024-11-18 14:13:08,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:08,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454077850] [2024-11-18 14:13:08,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:13:08,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:08,871 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:13:08,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:13:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:13:08,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:08,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454077850] [2024-11-18 14:13:08,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454077850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:08,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:08,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:13:08,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42615175] [2024-11-18 14:13:08,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:08,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:13:08,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:13:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:13:08,955 INFO L87 Difference]: Start difference. First operand 387 states and 589 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:08,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:08,991 INFO L93 Difference]: Finished difference Result 749 states and 1143 transitions. [2024-11-18 14:13:08,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:13:08,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 128 [2024-11-18 14:13:08,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:08,994 INFO L225 Difference]: With dead ends: 749 [2024-11-18 14:13:08,994 INFO L226 Difference]: Without dead ends: 387 [2024-11-18 14:13:08,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:13:09,018 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 2 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:09,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1895 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:09,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-18 14:13:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2024-11-18 14:13:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 299 states have (on average 1.5183946488294315) internal successors, (454), 304 states have internal predecessors, (454), 65 states have call successors, (65), 20 states have call predecessors, (65), 22 states have return successors, (69), 64 states have call predecessors, (69), 64 states have call successors, (69) [2024-11-18 14:13:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 588 transitions. [2024-11-18 14:13:09,033 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 588 transitions. Word has length 128 [2024-11-18 14:13:09,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:09,033 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 588 transitions. [2024-11-18 14:13:09,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 588 transitions. [2024-11-18 14:13:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 14:13:09,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:09,039 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:09,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:13:09,040 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:09,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:09,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1439219521, now seen corresponding path program 3 times [2024-11-18 14:13:09,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:09,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088995671] [2024-11-18 14:13:09,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:13:09,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:09,063 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 14:13:09,064 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:13:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:13:09,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:09,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088995671] [2024-11-18 14:13:09,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088995671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:09,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:09,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:13:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56657623] [2024-11-18 14:13:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:09,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:13:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:13:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:13:09,137 INFO L87 Difference]: Start difference. First operand 387 states and 588 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:09,178 INFO L93 Difference]: Finished difference Result 751 states and 1149 transitions. [2024-11-18 14:13:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:13:09,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 129 [2024-11-18 14:13:09,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:09,182 INFO L225 Difference]: With dead ends: 751 [2024-11-18 14:13:09,182 INFO L226 Difference]: Without dead ends: 389 [2024-11-18 14:13:09,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:13:09,185 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 1 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:09,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1906 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-18 14:13:09,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2024-11-18 14:13:09,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 300 states have (on average 1.5166666666666666) internal successors, (455), 306 states have internal predecessors, (455), 65 states have call successors, (65), 20 states have call predecessors, (65), 23 states have return successors, (74), 64 states have call predecessors, (74), 64 states have call successors, (74) [2024-11-18 14:13:09,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 594 transitions. [2024-11-18 14:13:09,200 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 594 transitions. Word has length 129 [2024-11-18 14:13:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:09,200 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 594 transitions. [2024-11-18 14:13:09,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 594 transitions. [2024-11-18 14:13:09,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 14:13:09,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:09,203 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:09,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:13:09,203 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:09,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:09,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1116726384, now seen corresponding path program 1 times [2024-11-18 14:13:09,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:09,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233574192] [2024-11-18 14:13:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:09,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 14:13:09,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:09,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233574192] [2024-11-18 14:13:09,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233574192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:09,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:09,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:13:09,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158773096] [2024-11-18 14:13:09,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:09,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:13:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:13:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:13:09,328 INFO L87 Difference]: Start difference. First operand 389 states and 594 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:09,361 INFO L93 Difference]: Finished difference Result 757 states and 1159 transitions. [2024-11-18 14:13:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:13:09,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 130 [2024-11-18 14:13:09,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:09,364 INFO L225 Difference]: With dead ends: 757 [2024-11-18 14:13:09,364 INFO L226 Difference]: Without dead ends: 391 [2024-11-18 14:13:09,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:13:09,366 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 1 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:09,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1912 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:09,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-18 14:13:09,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2024-11-18 14:13:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 301 states have (on average 1.5149501661129567) internal successors, (456), 308 states have internal predecessors, (456), 65 states have call successors, (65), 20 states have call predecessors, (65), 24 states have return successors, (76), 64 states have call predecessors, (76), 64 states have call successors, (76) [2024-11-18 14:13:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 597 transitions. [2024-11-18 14:13:09,379 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 597 transitions. Word has length 130 [2024-11-18 14:13:09,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:09,379 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 597 transitions. [2024-11-18 14:13:09,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:13:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 597 transitions. [2024-11-18 14:13:09,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-18 14:13:09,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:09,383 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:09,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:13:09,383 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:09,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:09,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1727508064, now seen corresponding path program 1 times [2024-11-18 14:13:09,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:09,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957813159] [2024-11-18 14:13:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:09,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 14:13:09,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:09,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957813159] [2024-11-18 14:13:09,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957813159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:13:09,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666277080] [2024-11-18 14:13:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:09,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:09,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:13:09,540 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) [2024-11-18 14:13:09,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:13:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:09,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:13:09,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:13:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:09,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:13:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:09,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666277080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:13:09,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:13:09,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2024-11-18 14:13:09,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501698362] [2024-11-18 14:13:09,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:13:09,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 14:13:09,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:09,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 14:13:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:13:09,905 INFO L87 Difference]: Start difference. First operand 391 states and 597 transitions. Second operand has 11 states, 10 states have (on average 13.9) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-18 14:13:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:10,399 INFO L93 Difference]: Finished difference Result 1132 states and 1804 transitions. [2024-11-18 14:13:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:13:10,400 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 13.9) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 131 [2024-11-18 14:13:10,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:10,404 INFO L225 Difference]: With dead ends: 1132 [2024-11-18 14:13:10,404 INFO L226 Difference]: Without dead ends: 770 [2024-11-18 14:13:10,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:13:10,405 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 1106 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 3815 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:10,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 3815 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:13:10,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-11-18 14:13:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 746. [2024-11-18 14:13:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 592 states have (on average 1.5692567567567568) internal successors, (929), 598 states have internal predecessors, (929), 129 states have call successors, (129), 21 states have call predecessors, (129), 24 states have return successors, (150), 128 states have call predecessors, (150), 128 states have call successors, (150) [2024-11-18 14:13:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1208 transitions. [2024-11-18 14:13:10,425 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1208 transitions. Word has length 131 [2024-11-18 14:13:10,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:10,426 INFO L471 AbstractCegarLoop]: Abstraction has 746 states and 1208 transitions. [2024-11-18 14:13:10,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 13.9) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-18 14:13:10,426 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1208 transitions. [2024-11-18 14:13:10,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 14:13:10,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:10,429 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:10,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 14:13:10,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:10,630 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:10,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:10,631 INFO L85 PathProgramCache]: Analyzing trace with hash -441049744, now seen corresponding path program 1 times [2024-11-18 14:13:10,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:10,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654792597] [2024-11-18 14:13:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:10,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:10,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:10,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654792597] [2024-11-18 14:13:10,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654792597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:10,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:10,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:13:10,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766437182] [2024-11-18 14:13:10,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:10,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:10,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:10,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:10,680 INFO L87 Difference]: Start difference. First operand 746 states and 1208 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:10,726 INFO L93 Difference]: Finished difference Result 1745 states and 2872 transitions. [2024-11-18 14:13:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:10,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2024-11-18 14:13:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:10,732 INFO L225 Difference]: With dead ends: 1745 [2024-11-18 14:13:10,732 INFO L226 Difference]: Without dead ends: 1079 [2024-11-18 14:13:10,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:10,734 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 112 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:10,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 969 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:10,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-18 14:13:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1071. [2024-11-18 14:13:10,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 853 states have (on average 1.5873388042203986) internal successors, (1354), 859 states have internal predecessors, (1354), 193 states have call successors, (193), 21 states have call predecessors, (193), 24 states have return successors, (224), 192 states have call predecessors, (224), 192 states have call successors, (224) [2024-11-18 14:13:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1771 transitions. [2024-11-18 14:13:10,769 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1771 transitions. Word has length 134 [2024-11-18 14:13:10,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:10,769 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1771 transitions. [2024-11-18 14:13:10,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1771 transitions. [2024-11-18 14:13:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 14:13:10,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:10,774 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:10,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:13:10,774 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:10,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:10,774 INFO L85 PathProgramCache]: Analyzing trace with hash -522177180, now seen corresponding path program 1 times [2024-11-18 14:13:10,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:10,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23586447] [2024-11-18 14:13:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:10,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:10,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:10,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23586447] [2024-11-18 14:13:10,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23586447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:10,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:10,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:13:10,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49335759] [2024-11-18 14:13:10,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:10,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:10,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:10,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:10,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:10,824 INFO L87 Difference]: Start difference. First operand 1071 states and 1771 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:10,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:10,869 INFO L93 Difference]: Finished difference Result 2550 states and 4240 transitions. [2024-11-18 14:13:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:10,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2024-11-18 14:13:10,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:10,877 INFO L225 Difference]: With dead ends: 2550 [2024-11-18 14:13:10,877 INFO L226 Difference]: Without dead ends: 1612 [2024-11-18 14:13:10,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:10,881 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 110 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:10,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 966 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:10,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2024-11-18 14:13:10,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1604. [2024-11-18 14:13:10,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1291 states have (on average 1.5956622773044151) internal successors, (2060), 1297 states have internal predecessors, (2060), 288 states have call successors, (288), 21 states have call predecessors, (288), 24 states have return successors, (319), 287 states have call predecessors, (319), 287 states have call successors, (319) [2024-11-18 14:13:10,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2667 transitions. [2024-11-18 14:13:10,943 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2667 transitions. Word has length 135 [2024-11-18 14:13:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:10,943 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2667 transitions. [2024-11-18 14:13:10,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2667 transitions. [2024-11-18 14:13:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-18 14:13:10,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:10,951 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:10,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 14:13:10,952 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:10,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash -731142558, now seen corresponding path program 1 times [2024-11-18 14:13:10,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:10,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140592546] [2024-11-18 14:13:10,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:10,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:11,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:11,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140592546] [2024-11-18 14:13:11,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140592546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:11,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:11,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:13:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589027721] [2024-11-18 14:13:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:11,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:11,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:11,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:11,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:11,013 INFO L87 Difference]: Start difference. First operand 1604 states and 2667 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:11,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:11,096 INFO L93 Difference]: Finished difference Result 3757 states and 6292 transitions. [2024-11-18 14:13:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:11,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2024-11-18 14:13:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:11,110 INFO L225 Difference]: With dead ends: 3757 [2024-11-18 14:13:11,110 INFO L226 Difference]: Without dead ends: 2421 [2024-11-18 14:13:11,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:11,116 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 108 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:11,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 961 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:11,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2024-11-18 14:13:11,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2413. [2024-11-18 14:13:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2413 states, 1977 states have (on average 1.6019221041982803) internal successors, (3167), 1983 states have internal predecessors, (3167), 411 states have call successors, (411), 21 states have call predecessors, (411), 24 states have return successors, (458), 410 states have call predecessors, (458), 410 states have call successors, (458) [2024-11-18 14:13:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4036 transitions. [2024-11-18 14:13:11,226 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4036 transitions. Word has length 136 [2024-11-18 14:13:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:11,227 INFO L471 AbstractCegarLoop]: Abstraction has 2413 states and 4036 transitions. [2024-11-18 14:13:11,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4036 transitions. [2024-11-18 14:13:11,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-18 14:13:11,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:11,236 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:11,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 14:13:11,236 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:11,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1025642333, now seen corresponding path program 1 times [2024-11-18 14:13:11,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:11,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780589171] [2024-11-18 14:13:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:11,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:11,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:11,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780589171] [2024-11-18 14:13:11,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780589171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:11,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:11,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:13:11,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968864926] [2024-11-18 14:13:11,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:11,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:11,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:11,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:11,283 INFO L87 Difference]: Start difference. First operand 2413 states and 4036 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:11,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:11,353 INFO L93 Difference]: Finished difference Result 5641 states and 9495 transitions. [2024-11-18 14:13:11,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:11,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2024-11-18 14:13:11,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:11,370 INFO L225 Difference]: With dead ends: 5641 [2024-11-18 14:13:11,371 INFO L226 Difference]: Without dead ends: 3715 [2024-11-18 14:13:11,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:11,380 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 106 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:11,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 961 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2024-11-18 14:13:11,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3707. [2024-11-18 14:13:11,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3707 states, 3092 states have (on average 1.6057567917205693) internal successors, (4965), 3098 states have internal predecessors, (4965), 590 states have call successors, (590), 21 states have call predecessors, (590), 24 states have return successors, (663), 589 states have call predecessors, (663), 589 states have call successors, (663) [2024-11-18 14:13:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3707 states to 3707 states and 6218 transitions. [2024-11-18 14:13:11,545 INFO L78 Accepts]: Start accepts. Automaton has 3707 states and 6218 transitions. Word has length 137 [2024-11-18 14:13:11,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:11,545 INFO L471 AbstractCegarLoop]: Abstraction has 3707 states and 6218 transitions. [2024-11-18 14:13:11,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:11,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3707 states and 6218 transitions. [2024-11-18 14:13:11,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-18 14:13:11,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:11,558 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:11,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:13:11,558 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:11,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:11,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1282470426, now seen corresponding path program 1 times [2024-11-18 14:13:11,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:11,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154031446] [2024-11-18 14:13:11,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:11,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:11,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:11,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154031446] [2024-11-18 14:13:11,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154031446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:11,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:11,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:13:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284725002] [2024-11-18 14:13:11,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:11,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:11,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:11,606 INFO L87 Difference]: Start difference. First operand 3707 states and 6218 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:11,719 INFO L93 Difference]: Finished difference Result 8744 states and 14759 transitions. [2024-11-18 14:13:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:11,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2024-11-18 14:13:11,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:11,748 INFO L225 Difference]: With dead ends: 8744 [2024-11-18 14:13:11,748 INFO L226 Difference]: Without dead ends: 5856 [2024-11-18 14:13:11,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:11,761 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 104 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:11,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 964 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:11,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5856 states. [2024-11-18 14:13:11,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5856 to 5848. [2024-11-18 14:13:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5848 states, 4857 states have (on average 1.5999588223183034) internal successors, (7771), 4863 states have internal predecessors, (7771), 966 states have call successors, (966), 21 states have call predecessors, (966), 24 states have return successors, (1083), 965 states have call predecessors, (1083), 965 states have call successors, (1083) [2024-11-18 14:13:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5848 states to 5848 states and 9820 transitions. [2024-11-18 14:13:11,989 INFO L78 Accepts]: Start accepts. Automaton has 5848 states and 9820 transitions. Word has length 138 [2024-11-18 14:13:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:11,989 INFO L471 AbstractCegarLoop]: Abstraction has 5848 states and 9820 transitions. [2024-11-18 14:13:11,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:11,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5848 states and 9820 transitions. [2024-11-18 14:13:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 14:13:12,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:12,008 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:12,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:13:12,009 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:12,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:12,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1987312927, now seen corresponding path program 1 times [2024-11-18 14:13:12,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:12,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806162852] [2024-11-18 14:13:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:12,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806162852] [2024-11-18 14:13:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806162852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:12,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:12,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:13:12,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410743064] [2024-11-18 14:13:12,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:12,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:12,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:12,056 INFO L87 Difference]: Start difference. First operand 5848 states and 9820 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:12,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:12,254 INFO L93 Difference]: Finished difference Result 14361 states and 24261 transitions. [2024-11-18 14:13:12,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:12,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2024-11-18 14:13:12,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:12,305 INFO L225 Difference]: With dead ends: 14361 [2024-11-18 14:13:12,305 INFO L226 Difference]: Without dead ends: 9734 [2024-11-18 14:13:12,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:12,325 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 102 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:12,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 968 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9734 states. [2024-11-18 14:13:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9734 to 9726. [2024-11-18 14:13:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9726 states, 8129 states have (on average 1.5979825316767131) internal successors, (12990), 8135 states have internal predecessors, (12990), 1572 states have call successors, (1572), 21 states have call predecessors, (1572), 24 states have return successors, (1767), 1571 states have call predecessors, (1767), 1571 states have call successors, (1767) [2024-11-18 14:13:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9726 states to 9726 states and 16329 transitions. [2024-11-18 14:13:12,806 INFO L78 Accepts]: Start accepts. Automaton has 9726 states and 16329 transitions. Word has length 139 [2024-11-18 14:13:12,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:12,807 INFO L471 AbstractCegarLoop]: Abstraction has 9726 states and 16329 transitions. [2024-11-18 14:13:12,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 9726 states and 16329 transitions. [2024-11-18 14:13:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 14:13:12,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:12,833 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:12,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:13:12,834 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:12,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:12,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1515882616, now seen corresponding path program 1 times [2024-11-18 14:13:12,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:12,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495750990] [2024-11-18 14:13:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:12,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:12,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:12,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495750990] [2024-11-18 14:13:12,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495750990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:12,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:12,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:13:12,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349372252] [2024-11-18 14:13:12,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:12,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:12,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:12,881 INFO L87 Difference]: Start difference. First operand 9726 states and 16329 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:13,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:13,205 INFO L93 Difference]: Finished difference Result 25070 states and 42261 transitions. [2024-11-18 14:13:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:13,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-11-18 14:13:13,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:13,266 INFO L225 Difference]: With dead ends: 25070 [2024-11-18 14:13:13,267 INFO L226 Difference]: Without dead ends: 17047 [2024-11-18 14:13:13,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:13,295 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 100 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:13,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 975 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17047 states. [2024-11-18 14:13:13,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17047 to 17039. [2024-11-18 14:13:13,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17039 states, 14239 states have (on average 1.5897183790996559) internal successors, (22636), 14245 states have internal predecessors, (22636), 2775 states have call successors, (2775), 21 states have call predecessors, (2775), 24 states have return successors, (3114), 2774 states have call predecessors, (3114), 2774 states have call successors, (3114) [2024-11-18 14:13:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17039 states to 17039 states and 28525 transitions. [2024-11-18 14:13:13,916 INFO L78 Accepts]: Start accepts. Automaton has 17039 states and 28525 transitions. Word has length 140 [2024-11-18 14:13:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:13,917 INFO L471 AbstractCegarLoop]: Abstraction has 17039 states and 28525 transitions. [2024-11-18 14:13:13,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 17039 states and 28525 transitions. [2024-11-18 14:13:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 14:13:13,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:13,952 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:13,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:13:13,952 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:13,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:13,953 INFO L85 PathProgramCache]: Analyzing trace with hash -457925826, now seen corresponding path program 1 times [2024-11-18 14:13:13,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:13,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115302725] [2024-11-18 14:13:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:13,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:14,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:14,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115302725] [2024-11-18 14:13:14,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115302725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:14,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:14,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:13:14,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848399291] [2024-11-18 14:13:14,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:14,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:14,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:14,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:14,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:14,004 INFO L87 Difference]: Start difference. First operand 17039 states and 28525 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:14,785 INFO L93 Difference]: Finished difference Result 45046 states and 75734 transitions. [2024-11-18 14:13:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:14,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2024-11-18 14:13:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:14,891 INFO L225 Difference]: With dead ends: 45046 [2024-11-18 14:13:14,891 INFO L226 Difference]: Without dead ends: 30387 [2024-11-18 14:13:14,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:14,930 INFO L432 NwaCegarLoop]: 485 mSDtfsCounter, 98 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:14,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 964 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30387 states. [2024-11-18 14:13:15,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30387 to 30379. [2024-11-18 14:13:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30379 states, 25540 states have (on average 1.585708692247455) internal successors, (40499), 25546 states have internal predecessors, (40499), 4814 states have call successors, (4814), 21 states have call predecessors, (4814), 24 states have return successors, (5427), 4813 states have call predecessors, (5427), 4813 states have call successors, (5427) [2024-11-18 14:13:16,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30379 states to 30379 states and 50740 transitions. [2024-11-18 14:13:16,081 INFO L78 Accepts]: Start accepts. Automaton has 30379 states and 50740 transitions. Word has length 141 [2024-11-18 14:13:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:16,082 INFO L471 AbstractCegarLoop]: Abstraction has 30379 states and 50740 transitions. [2024-11-18 14:13:16,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:16,082 INFO L276 IsEmpty]: Start isEmpty. Operand 30379 states and 50740 transitions. [2024-11-18 14:13:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-18 14:13:16,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:16,121 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:16,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:13:16,122 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:16,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:16,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1493085674, now seen corresponding path program 1 times [2024-11-18 14:13:16,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:16,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557356582] [2024-11-18 14:13:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:16,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:16,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:16,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557356582] [2024-11-18 14:13:16,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557356582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:16,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:16,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:13:16,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279689801] [2024-11-18 14:13:16,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:16,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:16,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:16,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:16,399 INFO L87 Difference]: Start difference. First operand 30379 states and 50740 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:17,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:17,694 INFO L93 Difference]: Finished difference Result 82783 states and 138726 transitions. [2024-11-18 14:13:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:17,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2024-11-18 14:13:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:17,895 INFO L225 Difference]: With dead ends: 82783 [2024-11-18 14:13:17,895 INFO L226 Difference]: Without dead ends: 55596 [2024-11-18 14:13:17,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:17,983 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 96 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:17,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 968 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:18,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55596 states. [2024-11-18 14:13:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55596 to 55588. [2024-11-18 14:13:20,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55588 states, 47034 states have (on average 1.5803461325849386) internal successors, (74330), 47040 states have internal predecessors, (74330), 8529 states have call successors, (8529), 21 states have call predecessors, (8529), 24 states have return successors, (9674), 8528 states have call predecessors, (9674), 8528 states have call successors, (9674) [2024-11-18 14:13:20,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55588 states to 55588 states and 92533 transitions. [2024-11-18 14:13:20,254 INFO L78 Accepts]: Start accepts. Automaton has 55588 states and 92533 transitions. Word has length 142 [2024-11-18 14:13:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:20,254 INFO L471 AbstractCegarLoop]: Abstraction has 55588 states and 92533 transitions. [2024-11-18 14:13:20,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 55588 states and 92533 transitions. [2024-11-18 14:13:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 14:13:20,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:20,301 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:20,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:13:20,302 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:20,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:20,302 INFO L85 PathProgramCache]: Analyzing trace with hash 556295134, now seen corresponding path program 1 times [2024-11-18 14:13:20,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:20,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055477527] [2024-11-18 14:13:20,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:20,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:20,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:20,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055477527] [2024-11-18 14:13:20,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055477527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:20,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:20,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 14:13:20,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120336172] [2024-11-18 14:13:20,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:20,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:13:20,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:20,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:13:20,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:20,357 INFO L87 Difference]: Start difference. First operand 55588 states and 92533 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:22,530 INFO L93 Difference]: Finished difference Result 103839 states and 173143 transitions. [2024-11-18 14:13:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:13:22,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2024-11-18 14:13:22,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:22,936 INFO L225 Difference]: With dead ends: 103839 [2024-11-18 14:13:22,937 INFO L226 Difference]: Without dead ends: 103670 [2024-11-18 14:13:22,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 14:13:22,979 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 91 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:22,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 978 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:13:23,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103670 states. [2024-11-18 14:13:26,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103670 to 103662. [2024-11-18 14:13:26,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103662 states, 88309 states have (on average 1.5735768721194896) internal successors, (138961), 88315 states have internal predecessors, (138961), 15328 states have call successors, (15328), 21 states have call predecessors, (15328), 24 states have return successors, (17519), 15327 states have call predecessors, (17519), 15327 states have call successors, (17519) [2024-11-18 14:13:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103662 states to 103662 states and 171808 transitions. [2024-11-18 14:13:26,614 INFO L78 Accepts]: Start accepts. Automaton has 103662 states and 171808 transitions. Word has length 143 [2024-11-18 14:13:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:26,615 INFO L471 AbstractCegarLoop]: Abstraction has 103662 states and 171808 transitions. [2024-11-18 14:13:26,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 14:13:26,615 INFO L276 IsEmpty]: Start isEmpty. Operand 103662 states and 171808 transitions. [2024-11-18 14:13:26,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 14:13:26,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:26,675 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:26,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:13:26,676 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:26,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:26,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1609453687, now seen corresponding path program 1 times [2024-11-18 14:13:26,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:26,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76402265] [2024-11-18 14:13:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:26,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:13:26,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76402265] [2024-11-18 14:13:26,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76402265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:13:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492940277] [2024-11-18 14:13:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:26,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:26,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:13:26,977 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:13:26,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:13:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:27,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 14:13:27,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:13:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:13:27,662 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:13:27,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492940277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:27,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:13:27,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 22 [2024-11-18 14:13:27,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634385531] [2024-11-18 14:13:27,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:27,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 14:13:27,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 14:13:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:13:27,664 INFO L87 Difference]: Start difference. First operand 103662 states and 171808 transitions. Second operand has 12 states, 11 states have (on average 9.636363636363637) internal successors, (106), 9 states have internal predecessors, (106), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-18 14:13:32,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:32,534 INFO L93 Difference]: Finished difference Result 206605 states and 347913 transitions. [2024-11-18 14:13:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:13:32,535 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.636363636363637) internal successors, (106), 9 states have internal predecessors, (106), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 144 [2024-11-18 14:13:32,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:33,353 INFO L225 Difference]: With dead ends: 206605 [2024-11-18 14:13:33,353 INFO L226 Difference]: Without dead ends: 206442 [2024-11-18 14:13:33,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 14:13:33,446 INFO L432 NwaCegarLoop]: 604 mSDtfsCounter, 801 mSDsluCounter, 4713 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 5317 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:33,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 5317 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 14:13:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206442 states. [2024-11-18 14:13:40,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206442 to 206412. [2024-11-18 14:13:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206412 states, 175899 states have (on average 1.5743921227522613) internal successors, (276934), 175801 states have internal predecessors, (276934), 30453 states have call successors, (30453), 53 states have call predecessors, (30453), 59 states have return successors, (38109), 30563 states have call predecessors, (38109), 30450 states have call successors, (38109) [2024-11-18 14:13:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206412 states to 206412 states and 345496 transitions. [2024-11-18 14:13:41,407 INFO L78 Accepts]: Start accepts. Automaton has 206412 states and 345496 transitions. Word has length 144 [2024-11-18 14:13:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:13:41,407 INFO L471 AbstractCegarLoop]: Abstraction has 206412 states and 345496 transitions. [2024-11-18 14:13:41,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.636363636363637) internal successors, (106), 9 states have internal predecessors, (106), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-18 14:13:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 206412 states and 345496 transitions. [2024-11-18 14:13:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 14:13:41,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:13:41,527 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:13:41,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 14:13:41,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:13:41,728 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:13:41,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:13:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 679887942, now seen corresponding path program 1 times [2024-11-18 14:13:41,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:13:41,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892519322] [2024-11-18 14:13:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:13:41,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:13:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:13:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 14:13:41,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:13:41,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892519322] [2024-11-18 14:13:41,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892519322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:13:41,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:13:41,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:13:41,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393513548] [2024-11-18 14:13:41,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:13:41,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:13:41,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:13:41,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:13:41,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:13:41,860 INFO L87 Difference]: Start difference. First operand 206412 states and 345496 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-18 14:13:46,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:13:46,640 INFO L93 Difference]: Finished difference Result 207176 states and 346606 transitions. [2024-11-18 14:13:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:13:46,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 6 states have internal predecessors, (97), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 145 [2024-11-18 14:13:46,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:13:47,373 INFO L225 Difference]: With dead ends: 207176 [2024-11-18 14:13:47,374 INFO L226 Difference]: Without dead ends: 206507 [2024-11-18 14:13:47,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:13:47,467 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 651 mSDsluCounter, 2227 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:13:47,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 2673 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:13:47,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206507 states.