/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/email_spec0_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 09:29:48,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 09:29:48,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 09:29:48,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 09:29:48,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 09:29:48,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 09:29:48,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 09:29:48,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 09:29:48,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 09:29:48,373 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 09:29:48,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 09:29:48,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 09:29:48,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 09:29:48,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 09:29:48,375 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 09:29:48,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 09:29:48,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 09:29:48,376 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 09:29:48,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 09:29:48,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 09:29:48,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 09:29:48,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 09:29:48,378 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 09:29:48,378 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 09:29:48,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 09:29:48,378 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 09:29:48,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 09:29:48,378 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 09:29:48,379 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 09:29:48,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 09:29:48,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 09:29:48,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 09:29:48,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:29:48,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 09:29:48,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 09:29:48,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 09:29:48,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 09:29:48,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 09:29:48,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 09:29:48,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 09:29:48,380 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 09:29:48,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 09:29:48,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 09:29:48,381 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 09:29:48,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 09:29:48,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 09:29:48,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 09:29:48,591 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 09:29:48,592 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 09:29:48,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product22.cil.c [2023-12-21 09:29:49,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 09:29:49,784 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 09:29:49,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product22.cil.c [2023-12-21 09:29:49,808 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce78d384f/f3648bd063fe457c8c991dd97fe63ff0/FLAG1d4d23e5d [2023-12-21 09:29:49,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce78d384f/f3648bd063fe457c8c991dd97fe63ff0 [2023-12-21 09:29:49,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 09:29:49,823 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 09:29:49,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 09:29:49,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 09:29:49,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 09:29:49,828 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:29:49" (1/1) ... [2023-12-21 09:29:49,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5950d2a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:49, skipping insertion in model container [2023-12-21 09:29:49,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:29:49" (1/1) ... [2023-12-21 09:29:49,870 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 09:29:50,002 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product22.cil.c[4724,4737] [2023-12-21 09:29:50,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:29:50,238 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 09:29:50,244 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [48] [2023-12-21 09:29:50,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [66] [2023-12-21 09:29:50,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [189] [2023-12-21 09:29:50,245 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [198] [2023-12-21 09:29:50,246 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [236] [2023-12-21 09:29:50,246 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [602] [2023-12-21 09:29:50,246 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1007] [2023-12-21 09:29:50,246 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1314] [2023-12-21 09:29:50,246 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptForward_spec.i","") [1618] [2023-12-21 09:29:50,246 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1637] [2023-12-21 09:29:50,246 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2702] [2023-12-21 09:29:50,252 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product22.cil.c[4724,4737] [2023-12-21 09:29:50,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:29:50,346 INFO L206 MainTranslator]: Completed translation [2023-12-21 09:29:50,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50 WrapperNode [2023-12-21 09:29:50,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 09:29:50,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 09:29:50,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 09:29:50,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 09:29:50,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,442 INFO L138 Inliner]: procedures = 128, calls = 189, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 996 [2023-12-21 09:29:50,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 09:29:50,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 09:29:50,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 09:29:50,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 09:29:50,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,473 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-12-21 09:29:50,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,474 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,496 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,517 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 09:29:50,528 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 09:29:50,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 09:29:50,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 09:29:50,529 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (1/1) ... [2023-12-21 09:29:50,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:29:50,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:29:50,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 09:29:50,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 09:29:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-21 09:29:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-21 09:29:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-21 09:29:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-21 09:29:50,608 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-21 09:29:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-21 09:29:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-21 09:29:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-21 09:29:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-21 09:29:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-21 09:29:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-21 09:29:50,609 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-21 09:29:50,609 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-21 09:29:50,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-21 09:29:50,610 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-21 09:29:50,610 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-21 09:29:50,611 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-21 09:29:50,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-21 09:29:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-12-21 09:29:50,612 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-12-21 09:29:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-21 09:29:50,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-21 09:29:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 09:29:50,612 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-21 09:29:50,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-21 09:29:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-21 09:29:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-21 09:29:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-21 09:29:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-21 09:29:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-21 09:29:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-21 09:29:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-21 09:29:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-21 09:29:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-21 09:29:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-21 09:29:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-21 09:29:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-21 09:29:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 09:29:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 09:29:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 09:29:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 09:29:50,613 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-21 09:29:50,614 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-21 09:29:50,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 09:29:50,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 09:29:50,797 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 09:29:50,800 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 09:29:51,359 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 09:29:51,415 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 09:29:51,415 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 09:29:51,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:29:51 BoogieIcfgContainer [2023-12-21 09:29:51,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 09:29:51,417 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 09:29:51,417 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 09:29:51,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 09:29:51,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:29:49" (1/3) ... [2023-12-21 09:29:51,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43327d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:29:51, skipping insertion in model container [2023-12-21 09:29:51,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:29:50" (2/3) ... [2023-12-21 09:29:51,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43327d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:29:51, skipping insertion in model container [2023-12-21 09:29:51,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:29:51" (3/3) ... [2023-12-21 09:29:51,423 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product22.cil.c [2023-12-21 09:29:51,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 09:29:51,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 09:29:51,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 09:29:51,479 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78326400, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 09:29:51,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 09:29:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 224 states have (on average 1.5892857142857142) internal successors, (356), 228 states have internal predecessors, (356), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 09:29:51,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 09:29:51,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:51,519 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 09:29:51,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:51,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:51,524 INFO L85 PathProgramCache]: Analyzing trace with hash 651467116, now seen corresponding path program 1 times [2023-12-21 09:29:51,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:51,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832707998] [2023-12-21 09:29:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:51,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:52,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:29:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:29:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:29:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 09:29:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 09:29:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:29:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:29:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:29:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:29:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:29:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:29:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 09:29:52,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:52,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832707998] [2023-12-21 09:29:52,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832707998] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:29:52,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781791433] [2023-12-21 09:29:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:52,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:29:52,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:29:52,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:29:52,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 09:29:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 09:29:52,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:29:52,447 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 09:29:52,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:29:52,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781791433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:29:52,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:29:52,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-21 09:29:52,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308429550] [2023-12-21 09:29:52,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:29:52,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 09:29:52,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:29:52,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 09:29:52,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:29:52,472 INFO L87 Difference]: Start difference. First operand has 295 states, 224 states have (on average 1.5892857142857142) internal successors, (356), 228 states have internal predecessors, (356), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:29:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:29:52,552 INFO L93 Difference]: Finished difference Result 441 states and 668 transitions. [2023-12-21 09:29:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 09:29:52,555 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 111 [2023-12-21 09:29:52,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:29:52,563 INFO L225 Difference]: With dead ends: 441 [2023-12-21 09:29:52,564 INFO L226 Difference]: Without dead ends: 292 [2023-12-21 09:29:52,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:29:52,569 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:29:52,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 436 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:29:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-21 09:29:52,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2023-12-21 09:29:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 222 states have (on average 1.572072072072072) internal successors, (349), 225 states have internal predecessors, (349), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-21 09:29:52,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 448 transitions. [2023-12-21 09:29:52,628 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 448 transitions. Word has length 111 [2023-12-21 09:29:52,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:29:52,629 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 448 transitions. [2023-12-21 09:29:52,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:29:52,629 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 448 transitions. [2023-12-21 09:29:52,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 09:29:52,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:52,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 09:29:52,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 09:29:52,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 09:29:52,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:52,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash 363387351, now seen corresponding path program 1 times [2023-12-21 09:29:52,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:52,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580967703] [2023-12-21 09:29:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:52,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:52,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:29:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:29:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:29:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 09:29:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 09:29:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:29:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:29:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:29:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:29:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:29:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:29:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 09:29:53,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:53,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580967703] [2023-12-21 09:29:53,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580967703] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:29:53,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703150398] [2023-12-21 09:29:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:53,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:29:53,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:29:53,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:29:53,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 09:29:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 09:29:53,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:29:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 09:29:53,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:29:53,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703150398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:29:53,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:29:53,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:29:53,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409112061] [2023-12-21 09:29:53,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:29:53,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:29:53,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:29:53,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:29:53,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:29:53,373 INFO L87 Difference]: Start difference. First operand 292 states and 448 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:29:53,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:29:53,439 INFO L93 Difference]: Finished difference Result 437 states and 655 transitions. [2023-12-21 09:29:53,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:29:53,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2023-12-21 09:29:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:29:53,444 INFO L225 Difference]: With dead ends: 437 [2023-12-21 09:29:53,444 INFO L226 Difference]: Without dead ends: 294 [2023-12-21 09:29:53,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:29:53,449 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:29:53,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 865 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:29:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-21 09:29:53,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-12-21 09:29:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 224 states have (on average 1.5669642857142858) internal successors, (351), 227 states have internal predecessors, (351), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-21 09:29:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 450 transitions. [2023-12-21 09:29:53,474 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 450 transitions. Word has length 112 [2023-12-21 09:29:53,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:29:53,475 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 450 transitions. [2023-12-21 09:29:53,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:29:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 450 transitions. [2023-12-21 09:29:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-21 09:29:53,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:53,476 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 09:29:53,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 09:29:53,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 09:29:53,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:53,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:53,685 INFO L85 PathProgramCache]: Analyzing trace with hash 602747457, now seen corresponding path program 1 times [2023-12-21 09:29:53,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:53,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591557792] [2023-12-21 09:29:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:53,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:29:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:29:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:29:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 09:29:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:29:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:29:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:29:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:29:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:29:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:29:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:29:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:29:53,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:53,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591557792] [2023-12-21 09:29:53,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591557792] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:29:53,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560232329] [2023-12-21 09:29:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:53,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:29:53,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:29:53,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:29:53,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 09:29:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:29:54,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:29:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 09:29:54,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:29:54,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560232329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:29:54,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:29:54,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:29:54,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115343614] [2023-12-21 09:29:54,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:29:54,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:29:54,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:29:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:29:54,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:29:54,133 INFO L87 Difference]: Start difference. First operand 294 states and 450 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:29:54,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:29:54,169 INFO L93 Difference]: Finished difference Result 622 states and 966 transitions. [2023-12-21 09:29:54,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:29:54,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2023-12-21 09:29:54,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:29:54,171 INFO L225 Difference]: With dead ends: 622 [2023-12-21 09:29:54,171 INFO L226 Difference]: Without dead ends: 350 [2023-12-21 09:29:54,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:29:54,173 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 109 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:29:54,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 838 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:29:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-21 09:29:54,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 345. [2023-12-21 09:29:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 264 states have (on average 1.5833333333333333) internal successors, (418), 267 states have internal predecessors, (418), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-21 09:29:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 539 transitions. [2023-12-21 09:29:54,206 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 539 transitions. Word has length 119 [2023-12-21 09:29:54,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:29:54,206 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 539 transitions. [2023-12-21 09:29:54,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:29:54,206 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 539 transitions. [2023-12-21 09:29:54,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-21 09:29:54,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:54,208 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-21 09:29:54,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 09:29:54,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:29:54,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:54,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:54,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1548440032, now seen corresponding path program 1 times [2023-12-21 09:29:54,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:54,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864907722] [2023-12-21 09:29:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:54,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:29:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:29:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:29:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 09:29:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:29:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:29:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:29:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:29:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:29:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:29:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:29:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:29:54,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:54,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864907722] [2023-12-21 09:29:54,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864907722] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:29:54,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721274916] [2023-12-21 09:29:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:54,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:29:54,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:29:54,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:29:54,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 09:29:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:54,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 09:29:54,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:29:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 09:29:54,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:29:54,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721274916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:29:54,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:29:54,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 09:29:54,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816831805] [2023-12-21 09:29:54,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:29:54,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:29:54,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:29:54,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:29:54,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:29:54,858 INFO L87 Difference]: Start difference. First operand 345 states and 539 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 09:29:54,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:29:54,933 INFO L93 Difference]: Finished difference Result 685 states and 1072 transitions. [2023-12-21 09:29:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:29:54,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2023-12-21 09:29:54,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:29:54,936 INFO L225 Difference]: With dead ends: 685 [2023-12-21 09:29:54,936 INFO L226 Difference]: Without dead ends: 347 [2023-12-21 09:29:54,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:29:54,941 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 8 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:29:54,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1685 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:29:54,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-21 09:29:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-12-21 09:29:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 265 states have (on average 1.5811320754716982) internal successors, (419), 269 states have internal predecessors, (419), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2023-12-21 09:29:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 542 transitions. [2023-12-21 09:29:54,958 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 542 transitions. Word has length 120 [2023-12-21 09:29:54,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:29:54,959 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 542 transitions. [2023-12-21 09:29:54,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 09:29:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 542 transitions. [2023-12-21 09:29:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-21 09:29:54,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:54,963 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-21 09:29:54,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 09:29:55,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:29:55,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:55,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:55,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1216469767, now seen corresponding path program 1 times [2023-12-21 09:29:55,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:55,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114206] [2023-12-21 09:29:55,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:55,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:29:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 09:29:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 09:29:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 09:29:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:29:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:29:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:29:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:29:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:29:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:29:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:29:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:29:55,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114206] [2023-12-21 09:29:55,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114206] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:29:55,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169028308] [2023-12-21 09:29:55,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:55,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:29:55,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:29:55,335 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:29:55,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 09:29:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:55,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 09:29:55,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:29:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 09:29:55,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:29:55,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169028308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:29:55,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:29:55,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-21 09:29:55,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239427927] [2023-12-21 09:29:55,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:29:55,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:29:55,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:29:55,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:29:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:29:55,624 INFO L87 Difference]: Start difference. First operand 347 states and 542 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 09:29:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:29:55,691 INFO L93 Difference]: Finished difference Result 687 states and 1077 transitions. [2023-12-21 09:29:55,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:29:55,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2023-12-21 09:29:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:29:55,693 INFO L225 Difference]: With dead ends: 687 [2023-12-21 09:29:55,693 INFO L226 Difference]: Without dead ends: 349 [2023-12-21 09:29:55,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-21 09:29:55,695 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 8 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:29:55,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1671 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:29:55,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-21 09:29:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2023-12-21 09:29:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 266 states have (on average 1.5789473684210527) internal successors, (420), 271 states have internal predecessors, (420), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2023-12-21 09:29:55,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 548 transitions. [2023-12-21 09:29:55,705 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 548 transitions. Word has length 121 [2023-12-21 09:29:55,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:29:55,705 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 548 transitions. [2023-12-21 09:29:55,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 09:29:55,705 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 548 transitions. [2023-12-21 09:29:55,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 09:29:55,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:55,706 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:29:55,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 09:29:55,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:29:55,913 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:55,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:55,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1140225367, now seen corresponding path program 1 times [2023-12-21 09:29:55,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:55,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117418282] [2023-12-21 09:29:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:55,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:29:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:29:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 09:29:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:29:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 09:29:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:29:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:29:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:29:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:29:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:29:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:29:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:29:56,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:56,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117418282] [2023-12-21 09:29:56,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117418282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:29:56,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:29:56,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:29:56,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31552008] [2023-12-21 09:29:56,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:29:56,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:29:56,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:29:56,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:29:56,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:29:56,106 INFO L87 Difference]: Start difference. First operand 349 states and 548 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 09:29:57,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:29:57,472 INFO L93 Difference]: Finished difference Result 829 states and 1313 transitions. [2023-12-21 09:29:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:29:57,472 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2023-12-21 09:29:57,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:29:57,476 INFO L225 Difference]: With dead ends: 829 [2023-12-21 09:29:57,476 INFO L226 Difference]: Without dead ends: 499 [2023-12-21 09:29:57,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:29:57,478 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 992 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2201 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 2201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 09:29:57,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1011 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 2201 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 09:29:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-12-21 09:29:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 349. [2023-12-21 09:29:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 266 states have (on average 1.5789473684210527) internal successors, (420), 271 states have internal predecessors, (420), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2023-12-21 09:29:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 547 transitions. [2023-12-21 09:29:57,510 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 547 transitions. Word has length 122 [2023-12-21 09:29:57,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:29:57,510 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 547 transitions. [2023-12-21 09:29:57,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 09:29:57,510 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 547 transitions. [2023-12-21 09:29:57,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-21 09:29:57,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:57,512 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:29:57,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 09:29:57,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:57,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1986482446, now seen corresponding path program 2 times [2023-12-21 09:29:57,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:57,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32218167] [2023-12-21 09:29:57,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:57,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:29:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:29:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 09:29:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 09:29:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 09:29:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:29:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:29:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:29:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:29:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:29:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:29:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:29:57,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:57,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32218167] [2023-12-21 09:29:57,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32218167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:29:57,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:29:57,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:29:57,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538756978] [2023-12-21 09:29:57,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:29:57,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:29:57,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:29:57,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:29:57,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:29:57,685 INFO L87 Difference]: Start difference. First operand 349 states and 547 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 09:29:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:29:59,008 INFO L93 Difference]: Finished difference Result 831 states and 1316 transitions. [2023-12-21 09:29:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:29:59,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2023-12-21 09:29:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:29:59,012 INFO L225 Difference]: With dead ends: 831 [2023-12-21 09:29:59,012 INFO L226 Difference]: Without dead ends: 501 [2023-12-21 09:29:59,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:29:59,014 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1019 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:29:59,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1011 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:29:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-21 09:29:59,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 351. [2023-12-21 09:29:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 267 states have (on average 1.5767790262172285) internal successors, (421), 273 states have internal predecessors, (421), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2023-12-21 09:29:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 550 transitions. [2023-12-21 09:29:59,034 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 550 transitions. Word has length 123 [2023-12-21 09:29:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:29:59,035 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 550 transitions. [2023-12-21 09:29:59,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 09:29:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 550 transitions. [2023-12-21 09:29:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-21 09:29:59,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:29:59,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:29:59,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 09:29:59,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:29:59,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:29:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1773068452, now seen corresponding path program 1 times [2023-12-21 09:29:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:29:59,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200435379] [2023-12-21 09:29:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:29:59,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:29:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:29:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:29:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:29:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:29:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:29:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:29:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:29:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 09:29:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:29:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:29:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:29:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:29:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:29:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:29:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:29:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:29:59,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:29:59,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200435379] [2023-12-21 09:29:59,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200435379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:29:59,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:29:59,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:29:59,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294096101] [2023-12-21 09:29:59,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:29:59,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:29:59,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:29:59,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:29:59,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:29:59,224 INFO L87 Difference]: Start difference. First operand 351 states and 550 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 09:30:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:01,318 INFO L93 Difference]: Finished difference Result 829 states and 1311 transitions. [2023-12-21 09:30:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:30:01,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 124 [2023-12-21 09:30:01,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:01,322 INFO L225 Difference]: With dead ends: 829 [2023-12-21 09:30:01,322 INFO L226 Difference]: Without dead ends: 501 [2023-12-21 09:30:01,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 09:30:01,323 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 987 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 3651 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 4030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 3651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:01,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1398 Invalid, 4030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 3651 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 09:30:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2023-12-21 09:30:01,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 351. [2023-12-21 09:30:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 267 states have (on average 1.5767790262172285) internal successors, (421), 273 states have internal predecessors, (421), 61 states have call successors, (61), 19 states have call predecessors, (61), 22 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2023-12-21 09:30:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 549 transitions. [2023-12-21 09:30:01,341 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 549 transitions. Word has length 124 [2023-12-21 09:30:01,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:01,342 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 549 transitions. [2023-12-21 09:30:01,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 09:30:01,342 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 549 transitions. [2023-12-21 09:30:01,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 09:30:01,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:01,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:30:01,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 09:30:01,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:01,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:01,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1019789636, now seen corresponding path program 2 times [2023-12-21 09:30:01,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:01,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389872322] [2023-12-21 09:30:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:01,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:30:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:30:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:30:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:30:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:30:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:30:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:30:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:30:01,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:01,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389872322] [2023-12-21 09:30:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389872322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:01,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:01,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:30:01,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444386468] [2023-12-21 09:30:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:01,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:30:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:30:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:30:01,561 INFO L87 Difference]: Start difference. First operand 351 states and 549 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 09:30:03,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:03,456 INFO L93 Difference]: Finished difference Result 831 states and 1317 transitions. [2023-12-21 09:30:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:30:03,457 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 125 [2023-12-21 09:30:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:03,459 INFO L225 Difference]: With dead ends: 831 [2023-12-21 09:30:03,459 INFO L226 Difference]: Without dead ends: 503 [2023-12-21 09:30:03,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 09:30:03,461 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 995 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 3618 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 3618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:03,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1398 Invalid, 3984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 3618 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 09:30:03,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-12-21 09:30:03,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 353. [2023-12-21 09:30:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 268 states have (on average 1.5746268656716418) internal successors, (422), 275 states have internal predecessors, (422), 61 states have call successors, (61), 19 states have call predecessors, (61), 23 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2023-12-21 09:30:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 555 transitions. [2023-12-21 09:30:03,498 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 555 transitions. Word has length 125 [2023-12-21 09:30:03,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:03,498 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 555 transitions. [2023-12-21 09:30:03,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-21 09:30:03,498 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 555 transitions. [2023-12-21 09:30:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 09:30:03,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:03,500 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:30:03,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 09:30:03,500 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:03,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:03,500 INFO L85 PathProgramCache]: Analyzing trace with hash 688996799, now seen corresponding path program 1 times [2023-12-21 09:30:03,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:03,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729908090] [2023-12-21 09:30:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:03,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:30:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:30:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:30:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:30:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:30:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:30:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:30:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 09:30:03,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:03,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729908090] [2023-12-21 09:30:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729908090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:30:03,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061590545] [2023-12-21 09:30:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:03,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:30:03,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:30:03,673 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:30:03,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 09:30:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:03,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:30:03,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:30:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:03,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:30:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:03,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061590545] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:30:03,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:30:03,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-12-21 09:30:03,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011746860] [2023-12-21 09:30:03,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:30:03,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 09:30:03,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:03,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 09:30:03,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:30:03,971 INFO L87 Difference]: Start difference. First operand 353 states and 555 transitions. Second operand has 15 states, 14 states have (on average 9.071428571428571) internal successors, (127), 11 states have internal predecessors, (127), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-21 09:30:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:06,385 INFO L93 Difference]: Finished difference Result 1180 states and 1963 transitions. [2023-12-21 09:30:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 09:30:06,385 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.071428571428571) internal successors, (127), 11 states have internal predecessors, (127), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 126 [2023-12-21 09:30:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:06,391 INFO L225 Difference]: With dead ends: 1180 [2023-12-21 09:30:06,391 INFO L226 Difference]: Without dead ends: 853 [2023-12-21 09:30:06,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-12-21 09:30:06,401 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 2062 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 4599 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 5302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 4599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:06,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 1700 Invalid, 5302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 4599 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 09:30:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2023-12-21 09:30:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 688. [2023-12-21 09:30:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 539 states have (on average 1.6233766233766234) internal successors, (875), 546 states have internal predecessors, (875), 125 states have call successors, (125), 19 states have call predecessors, (125), 23 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2023-12-21 09:30:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1146 transitions. [2023-12-21 09:30:06,430 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1146 transitions. Word has length 126 [2023-12-21 09:30:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:06,430 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 1146 transitions. [2023-12-21 09:30:06,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.071428571428571) internal successors, (127), 11 states have internal predecessors, (127), 4 states have call successors, (34), 6 states have call predecessors, (34), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-12-21 09:30:06,431 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1146 transitions. [2023-12-21 09:30:06,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-21 09:30:06,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:06,434 INFO L195 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, 1] [2023-12-21 09:30:06,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 09:30:06,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:30:06,642 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:06,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:06,643 INFO L85 PathProgramCache]: Analyzing trace with hash 272316160, now seen corresponding path program 1 times [2023-12-21 09:30:06,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:06,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436862705] [2023-12-21 09:30:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:06,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:30:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:30:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:30:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:30:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:30:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:30:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:30:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:06,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:06,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436862705] [2023-12-21 09:30:06,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436862705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:06,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:06,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:30:06,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904856913] [2023-12-21 09:30:06,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:06,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:30:06,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:06,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:30:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:30:06,722 INFO L87 Difference]: Start difference. First operand 688 states and 1146 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:07,937 INFO L93 Difference]: Finished difference Result 1775 states and 3022 transitions. [2023-12-21 09:30:07,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:30:07,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2023-12-21 09:30:07,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:07,944 INFO L225 Difference]: With dead ends: 1775 [2023-12-21 09:30:07,945 INFO L226 Difference]: Without dead ends: 1155 [2023-12-21 09:30:07,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:30:07,947 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 1088 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:07,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 749 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:30:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2023-12-21 09:30:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1000. [2023-12-21 09:30:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 787 states have (on average 1.6353240152477764) internal successors, (1287), 794 states have internal predecessors, (1287), 189 states have call successors, (189), 19 states have call predecessors, (189), 23 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2023-12-21 09:30:07,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1696 transitions. [2023-12-21 09:30:07,991 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1696 transitions. Word has length 130 [2023-12-21 09:30:07,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:07,991 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1696 transitions. [2023-12-21 09:30:07,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:07,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1696 transitions. [2023-12-21 09:30:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 09:30:07,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:07,996 INFO L195 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, 1, 1] [2023-12-21 09:30:07,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 09:30:07,997 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:07,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:07,997 INFO L85 PathProgramCache]: Analyzing trace with hash 700014208, now seen corresponding path program 1 times [2023-12-21 09:30:07,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:07,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836865006] [2023-12-21 09:30:07,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:07,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:30:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:30:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:30:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:30:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:30:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:30:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 09:30:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:08,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:08,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836865006] [2023-12-21 09:30:08,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836865006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:08,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:08,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:30:08,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260675324] [2023-12-21 09:30:08,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:08,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:30:08,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:08,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:30:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:30:08,086 INFO L87 Difference]: Start difference. First operand 1000 states and 1696 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:09,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:09,207 INFO L93 Difference]: Finished difference Result 2544 states and 4370 transitions. [2023-12-21 09:30:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:30:09,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2023-12-21 09:30:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:09,214 INFO L225 Difference]: With dead ends: 2544 [2023-12-21 09:30:09,214 INFO L226 Difference]: Without dead ends: 1662 [2023-12-21 09:30:09,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:30:09,217 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1104 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:09,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 741 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 09:30:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2023-12-21 09:30:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1507. [2023-12-21 09:30:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1199 states have (on average 1.640533778148457) internal successors, (1967), 1206 states have internal predecessors, (1967), 284 states have call successors, (284), 19 states have call predecessors, (284), 23 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2023-12-21 09:30:09,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2566 transitions. [2023-12-21 09:30:09,265 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2566 transitions. Word has length 131 [2023-12-21 09:30:09,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:09,265 INFO L495 AbstractCegarLoop]: Abstraction has 1507 states and 2566 transitions. [2023-12-21 09:30:09,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:09,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2566 transitions. [2023-12-21 09:30:09,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 09:30:09,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:09,271 INFO L195 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, 1, 1, 1] [2023-12-21 09:30:09,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 09:30:09,271 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:09,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash 922344690, now seen corresponding path program 1 times [2023-12-21 09:30:09,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:09,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619792414] [2023-12-21 09:30:09,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:09,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:30:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:30:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:30:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:30:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:30:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 09:30:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:30:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:09,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619792414] [2023-12-21 09:30:09,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619792414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:09,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:09,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:30:09,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400837698] [2023-12-21 09:30:09,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:09,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:30:09,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:09,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:30:09,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:30:09,342 INFO L87 Difference]: Start difference. First operand 1507 states and 2566 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:10,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:10,550 INFO L93 Difference]: Finished difference Result 3690 states and 6395 transitions. [2023-12-21 09:30:10,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:30:10,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2023-12-21 09:30:10,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:10,559 INFO L225 Difference]: With dead ends: 3690 [2023-12-21 09:30:10,559 INFO L226 Difference]: Without dead ends: 2429 [2023-12-21 09:30:10,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:30:10,563 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1094 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:10,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 738 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:30:10,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2023-12-21 09:30:10,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2274. [2023-12-21 09:30:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 1843 states have (on average 1.64514378730331) internal successors, (3032), 1850 states have internal predecessors, (3032), 407 states have call successors, (407), 19 states have call predecessors, (407), 23 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2023-12-21 09:30:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3893 transitions. [2023-12-21 09:30:10,634 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3893 transitions. Word has length 132 [2023-12-21 09:30:10,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:10,635 INFO L495 AbstractCegarLoop]: Abstraction has 2274 states and 3893 transitions. [2023-12-21 09:30:10,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3893 transitions. [2023-12-21 09:30:10,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 09:30:10,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:10,643 INFO L195 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, 1, 1, 1, 1] [2023-12-21 09:30:10,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 09:30:10,644 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:10,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1558176895, now seen corresponding path program 1 times [2023-12-21 09:30:10,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:10,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943928160] [2023-12-21 09:30:10,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:10,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:30:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:30:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:30:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:30:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:30:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 09:30:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:30:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:10,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:10,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943928160] [2023-12-21 09:30:10,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943928160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:10,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:10,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:30:10,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023829133] [2023-12-21 09:30:10,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:10,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:30:10,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:10,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:30:10,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:30:10,717 INFO L87 Difference]: Start difference. First operand 2274 states and 3893 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:11,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:11,835 INFO L93 Difference]: Finished difference Result 5472 states and 9553 transitions. [2023-12-21 09:30:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:30:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2023-12-21 09:30:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:11,849 INFO L225 Difference]: With dead ends: 5472 [2023-12-21 09:30:11,849 INFO L226 Difference]: Without dead ends: 3653 [2023-12-21 09:30:11,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:30:11,854 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1092 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:11,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 738 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 09:30:11,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2023-12-21 09:30:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3498. [2023-12-21 09:30:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 2888 states have (on average 1.6481994459833795) internal successors, (4760), 2895 states have internal predecessors, (4760), 586 states have call successors, (586), 19 states have call predecessors, (586), 23 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2023-12-21 09:30:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 6005 transitions. [2023-12-21 09:30:11,966 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 6005 transitions. Word has length 133 [2023-12-21 09:30:11,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:11,966 INFO L495 AbstractCegarLoop]: Abstraction has 3498 states and 6005 transitions. [2023-12-21 09:30:11,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:11,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 6005 transitions. [2023-12-21 09:30:11,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-21 09:30:11,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:11,977 INFO L195 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, 1, 1, 1, 1, 1] [2023-12-21 09:30:11,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 09:30:11,978 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:11,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash 915055862, now seen corresponding path program 1 times [2023-12-21 09:30:11,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:11,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168430675] [2023-12-21 09:30:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:11,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:30:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:30:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:30:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:30:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:30:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 09:30:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:30:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:12,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:12,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168430675] [2023-12-21 09:30:12,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168430675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:12,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:12,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:30:12,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170367645] [2023-12-21 09:30:12,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:12,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:30:12,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:12,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:30:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:30:12,047 INFO L87 Difference]: Start difference. First operand 3498 states and 6005 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:13,224 INFO L93 Difference]: Finished difference Result 8451 states and 14793 transitions. [2023-12-21 09:30:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:30:13,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2023-12-21 09:30:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:13,248 INFO L225 Difference]: With dead ends: 8451 [2023-12-21 09:30:13,248 INFO L226 Difference]: Without dead ends: 5711 [2023-12-21 09:30:13,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:30:13,257 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1094 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:13,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 762 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:30:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2023-12-21 09:30:13,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 5556. [2023-12-21 09:30:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 4570 states have (on average 1.637417943107221) internal successors, (7483), 4577 states have internal predecessors, (7483), 962 states have call successors, (962), 19 states have call predecessors, (962), 23 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2023-12-21 09:30:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 9524 transitions. [2023-12-21 09:30:13,437 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 9524 transitions. Word has length 134 [2023-12-21 09:30:13,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:13,437 INFO L495 AbstractCegarLoop]: Abstraction has 5556 states and 9524 transitions. [2023-12-21 09:30:13,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:13,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 9524 transitions. [2023-12-21 09:30:13,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 09:30:13,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:13,454 INFO L195 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, 1, 1, 1, 1, 1, 1] [2023-12-21 09:30:13,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 09:30:13,455 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:13,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1667121029, now seen corresponding path program 1 times [2023-12-21 09:30:13,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:13,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079275116] [2023-12-21 09:30:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:13,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:30:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:30:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:30:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:30:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:30:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 09:30:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 09:30:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:13,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:13,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079275116] [2023-12-21 09:30:13,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079275116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:13,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:13,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:30:13,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017974369] [2023-12-21 09:30:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:13,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:30:13,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:13,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:30:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:30:13,565 INFO L87 Difference]: Start difference. First operand 5556 states and 9524 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:14,820 INFO L93 Difference]: Finished difference Result 13812 states and 24150 transitions. [2023-12-21 09:30:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:30:14,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2023-12-21 09:30:14,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:14,860 INFO L225 Difference]: With dead ends: 13812 [2023-12-21 09:30:14,860 INFO L226 Difference]: Without dead ends: 9400 [2023-12-21 09:30:14,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:30:14,881 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1043 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:14,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 739 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:30:14,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9400 states. [2023-12-21 09:30:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9400 to 9245. [2023-12-21 09:30:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9245 states, 7653 states have (on average 1.6350450803606429) internal successors, (12513), 7660 states have internal predecessors, (12513), 1568 states have call successors, (1568), 19 states have call predecessors, (1568), 23 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2023-12-21 09:30:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9245 states to 9245 states and 15844 transitions. [2023-12-21 09:30:15,181 INFO L78 Accepts]: Start accepts. Automaton has 9245 states and 15844 transitions. Word has length 135 [2023-12-21 09:30:15,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:15,182 INFO L495 AbstractCegarLoop]: Abstraction has 9245 states and 15844 transitions. [2023-12-21 09:30:15,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:15,182 INFO L276 IsEmpty]: Start isEmpty. Operand 9245 states and 15844 transitions. [2023-12-21 09:30:15,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-21 09:30:15,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:15,206 INFO L195 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:30:15,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 09:30:15,206 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:15,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:15,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1854182536, now seen corresponding path program 1 times [2023-12-21 09:30:15,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:15,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754950707] [2023-12-21 09:30:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:15,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:30:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:30:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:30:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:30:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:30:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 09:30:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 09:30:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:15,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:15,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754950707] [2023-12-21 09:30:15,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754950707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:15,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:15,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:30:15,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961801406] [2023-12-21 09:30:15,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:15,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:30:15,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:15,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:30:15,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:30:15,278 INFO L87 Difference]: Start difference. First operand 9245 states and 15844 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:16,694 INFO L93 Difference]: Finished difference Result 24004 states and 41914 transitions. [2023-12-21 09:30:16,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:30:16,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2023-12-21 09:30:16,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:16,738 INFO L225 Difference]: With dead ends: 24004 [2023-12-21 09:30:16,738 INFO L226 Difference]: Without dead ends: 16360 [2023-12-21 09:30:16,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:30:16,758 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1115 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:16,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 777 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:30:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16360 states. [2023-12-21 09:30:17,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16360 to 16205. [2023-12-21 09:30:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16205 states, 13410 states have (on average 1.6260999254287845) internal successors, (21806), 13417 states have internal predecessors, (21806), 2771 states have call successors, (2771), 19 states have call predecessors, (2771), 23 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2023-12-21 09:30:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16205 states to 16205 states and 27687 transitions. [2023-12-21 09:30:17,269 INFO L78 Accepts]: Start accepts. Automaton has 16205 states and 27687 transitions. Word has length 136 [2023-12-21 09:30:17,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:17,269 INFO L495 AbstractCegarLoop]: Abstraction has 16205 states and 27687 transitions. [2023-12-21 09:30:17,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 16205 states and 27687 transitions. [2023-12-21 09:30:17,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 09:30:17,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:17,305 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:30:17,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 09:30:17,306 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:17,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:17,306 INFO L85 PathProgramCache]: Analyzing trace with hash 728412506, now seen corresponding path program 1 times [2023-12-21 09:30:17,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:17,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269743138] [2023-12-21 09:30:17,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:17,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:30:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:30:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:30:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:30:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:30:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 09:30:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 09:30:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:17,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:17,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269743138] [2023-12-21 09:30:17,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269743138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:17,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:17,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:30:17,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723246240] [2023-12-21 09:30:17,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:17,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:30:17,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:17,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:30:17,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:30:17,382 INFO L87 Difference]: Start difference. First operand 16205 states and 27687 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:19,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:19,068 INFO L93 Difference]: Finished difference Result 42979 states and 74926 transitions. [2023-12-21 09:30:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:30:19,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2023-12-21 09:30:19,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:19,160 INFO L225 Difference]: With dead ends: 42979 [2023-12-21 09:30:19,160 INFO L226 Difference]: Without dead ends: 29023 [2023-12-21 09:30:19,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:30:19,191 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1052 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:19,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 739 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:30:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29023 states. [2023-12-21 09:30:20,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29023 to 28868. [2023-12-21 09:30:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28868 states, 24034 states have (on average 1.6223683115586254) internal successors, (38992), 24041 states have internal predecessors, (38992), 4810 states have call successors, (4810), 19 states have call predecessors, (4810), 23 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2023-12-21 09:30:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28868 states to 28868 states and 49225 transitions. [2023-12-21 09:30:20,309 INFO L78 Accepts]: Start accepts. Automaton has 28868 states and 49225 transitions. Word has length 137 [2023-12-21 09:30:20,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:20,309 INFO L495 AbstractCegarLoop]: Abstraction has 28868 states and 49225 transitions. [2023-12-21 09:30:20,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:20,309 INFO L276 IsEmpty]: Start isEmpty. Operand 28868 states and 49225 transitions. [2023-12-21 09:30:20,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 09:30:20,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:20,352 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:30:20,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 09:30:20,353 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:20,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:20,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1163124774, now seen corresponding path program 1 times [2023-12-21 09:30:20,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:20,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733157332] [2023-12-21 09:30:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:20,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:30:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:30:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:30:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:30:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:30:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 09:30:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 09:30:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:20,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:20,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733157332] [2023-12-21 09:30:20,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733157332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:20,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:20,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:30:20,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680148] [2023-12-21 09:30:20,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:20,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:30:20,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:20,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:30:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:30:20,434 INFO L87 Difference]: Start difference. First operand 28868 states and 49225 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:22,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:22,909 INFO L93 Difference]: Finished difference Result 78751 states and 136485 transitions. [2023-12-21 09:30:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:30:22,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2023-12-21 09:30:22,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:23,080 INFO L225 Difference]: With dead ends: 78751 [2023-12-21 09:30:23,081 INFO L226 Difference]: Without dead ends: 52911 [2023-12-21 09:30:23,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:30:23,132 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1080 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:23,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 739 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:30:23,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52911 states. [2023-12-21 09:30:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52911 to 52756. [2023-12-21 09:30:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52756 states, 44207 states have (on average 1.6174361526455086) internal successors, (71502), 44214 states have internal predecessors, (71502), 8525 states have call successors, (8525), 19 states have call predecessors, (8525), 23 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2023-12-21 09:30:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52756 states to 52756 states and 89697 transitions. [2023-12-21 09:30:24,926 INFO L78 Accepts]: Start accepts. Automaton has 52756 states and 89697 transitions. Word has length 138 [2023-12-21 09:30:24,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:24,926 INFO L495 AbstractCegarLoop]: Abstraction has 52756 states and 89697 transitions. [2023-12-21 09:30:24,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 52756 states and 89697 transitions. [2023-12-21 09:30:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 09:30:24,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:24,969 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:30:24,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 09:30:24,970 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:24,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:24,970 INFO L85 PathProgramCache]: Analyzing trace with hash 401117306, now seen corresponding path program 1 times [2023-12-21 09:30:24,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:24,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912301445] [2023-12-21 09:30:24,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:24,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:30:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:30:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:30:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:30:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:30:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:30:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 09:30:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:25,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:25,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912301445] [2023-12-21 09:30:25,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912301445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:25,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:25,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:30:25,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911451100] [2023-12-21 09:30:25,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:25,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:30:25,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:25,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:30:25,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:30:25,042 INFO L87 Difference]: Start difference. First operand 52756 states and 89697 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:28,105 INFO L93 Difference]: Finished difference Result 98526 states and 171190 transitions. [2023-12-21 09:30:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:30:28,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 139 [2023-12-21 09:30:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:28,437 INFO L225 Difference]: With dead ends: 98526 [2023-12-21 09:30:28,437 INFO L226 Difference]: Without dead ends: 98383 [2023-12-21 09:30:28,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:30:28,479 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1058 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:28,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 742 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:30:28,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98383 states. [2023-12-21 09:30:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98383 to 98228. [2023-12-21 09:30:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98228 states, 82880 states have (on average 1.611136583011583) internal successors, (133531), 82887 states have internal predecessors, (133531), 15324 states have call successors, (15324), 19 states have call predecessors, (15324), 23 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2023-12-21 09:30:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98228 states to 98228 states and 166370 transitions. [2023-12-21 09:30:32,067 INFO L78 Accepts]: Start accepts. Automaton has 98228 states and 166370 transitions. Word has length 139 [2023-12-21 09:30:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:32,067 INFO L495 AbstractCegarLoop]: Abstraction has 98228 states and 166370 transitions. [2023-12-21 09:30:32,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 09:30:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 98228 states and 166370 transitions. [2023-12-21 09:30:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 09:30:32,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:32,138 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:30:32,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 09:30:32,138 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:32,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:32,139 INFO L85 PathProgramCache]: Analyzing trace with hash 878238663, now seen corresponding path program 1 times [2023-12-21 09:30:32,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:32,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746884032] [2023-12-21 09:30:32,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:32,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:30:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:30:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:30:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:30:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:30:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:30:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 09:30:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-21 09:30:32,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:32,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746884032] [2023-12-21 09:30:32,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746884032] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:30:32,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126840826] [2023-12-21 09:30:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:32,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:30:32,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:30:32,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:30:32,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 09:30:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:32,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 09:30:32,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:30:33,275 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 09:30:33,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:30:33,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126840826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:33,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:30:33,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2023-12-21 09:30:33,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988308190] [2023-12-21 09:30:33,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:33,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:30:33,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:33,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:30:33,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-21 09:30:33,277 INFO L87 Difference]: Start difference. First operand 98228 states and 166370 transitions. Second operand has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 09:30:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:37,519 INFO L93 Difference]: Finished difference Result 195743 states and 337032 transitions. [2023-12-21 09:30:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:30:37,519 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 140 [2023-12-21 09:30:37,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:38,282 INFO L225 Difference]: With dead ends: 195743 [2023-12-21 09:30:38,283 INFO L226 Difference]: Without dead ends: 195605 [2023-12-21 09:30:38,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 09:30:38,357 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 1141 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 3748 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:38,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 3748 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 09:30:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195605 states. [2023-12-21 09:30:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195605 to 195581. [2023-12-21 09:30:44,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195581 states, 165083 states have (on average 1.6120072933009455) internal successors, (266115), 164985 states have internal predecessors, (266115), 30441 states have call successors, (30441), 50 states have call predecessors, (30441), 56 states have return successors, (38097), 30551 states have call predecessors, (38097), 30438 states have call successors, (38097) [2023-12-21 09:30:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195581 states to 195581 states and 334653 transitions. [2023-12-21 09:30:45,576 INFO L78 Accepts]: Start accepts. Automaton has 195581 states and 334653 transitions. Word has length 140 [2023-12-21 09:30:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:30:45,576 INFO L495 AbstractCegarLoop]: Abstraction has 195581 states and 334653 transitions. [2023-12-21 09:30:45,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 09:30:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 195581 states and 334653 transitions. [2023-12-21 09:30:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 09:30:45,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:30:45,703 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:30:45,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 09:30:45,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:30:45,904 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:30:45,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:30:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2123509838, now seen corresponding path program 1 times [2023-12-21 09:30:45,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:30:45,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465940875] [2023-12-21 09:30:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:30:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:30:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:30:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:30:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:30:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:30:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:30:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:30:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:30:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:30:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:30:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:30:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:30:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 09:30:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 09:30:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:30:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:30:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-21 09:30:46,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:30:46,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465940875] [2023-12-21 09:30:46,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465940875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:30:46,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:30:46,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:30:46,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517588358] [2023-12-21 09:30:46,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:30:46,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:30:46,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:30:46,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:30:46,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:30:46,440 INFO L87 Difference]: Start difference. First operand 195581 states and 334653 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 6 states have internal predecessors, (92), 5 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 09:30:52,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:30:52,751 INFO L93 Difference]: Finished difference Result 197019 states and 343419 transitions. [2023-12-21 09:30:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 09:30:52,753 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 6 states have internal predecessors, (92), 5 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 141 [2023-12-21 09:30:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:30:53,379 INFO L225 Difference]: With dead ends: 197019 [2023-12-21 09:30:53,379 INFO L226 Difference]: Without dead ends: 196392 [2023-12-21 09:30:53,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2023-12-21 09:30:53,451 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1983 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 3325 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 3982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 3325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:30:53,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 1230 Invalid, 3982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 3325 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 09:30:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196392 states. [2023-12-21 09:30:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196392 to 195784. [2023-12-21 09:31:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195784 states, 165233 states have (on average 1.611875351775977) internal successors, (266335), 165140 states have internal predecessors, (266335), 30492 states have call successors, (30492), 53 states have call predecessors, (30492), 58 states have return successors, (38162), 30602 states have call predecessors, (38162), 30489 states have call successors, (38162) [2023-12-21 09:31:00,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195784 states to 195784 states and 334989 transitions. [2023-12-21 09:31:00,992 INFO L78 Accepts]: Start accepts. Automaton has 195784 states and 334989 transitions. Word has length 141 [2023-12-21 09:31:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:31:00,993 INFO L495 AbstractCegarLoop]: Abstraction has 195784 states and 334989 transitions. [2023-12-21 09:31:00,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 6 states have internal predecessors, (92), 5 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 09:31:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand 195784 states and 334989 transitions. [2023-12-21 09:31:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-21 09:31:01,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:31:01,123 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:31:01,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 09:31:01,123 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:31:01,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:31:01,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1546092321, now seen corresponding path program 1 times [2023-12-21 09:31:01,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:31:01,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39306085] [2023-12-21 09:31:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:31:01,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:31:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:31:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:31:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:31:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:31:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:31:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:31:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:31:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:31:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:31:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:31:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:31:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 09:31:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 09:31:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:31:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-21 09:31:01,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:31:01,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39306085] [2023-12-21 09:31:01,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39306085] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:31:01,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449281567] [2023-12-21 09:31:01,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:31:01,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:31:01,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:31:01,221 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:31:01,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 09:31:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:01,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 09:31:01,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:31:01,470 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 09:31:01,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:31:01,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449281567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:31:01,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:31:01,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 09:31:01,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626567709] [2023-12-21 09:31:01,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:31:01,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:31:01,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:31:01,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:31:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:31:01,471 INFO L87 Difference]: Start difference. First operand 195784 states and 334989 transitions. Second operand has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 09:31:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:31:05,324 INFO L93 Difference]: Finished difference Result 196209 states and 335634 transitions. [2023-12-21 09:31:05,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:31:05,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 142 [2023-12-21 09:31:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:31:06,118 INFO L225 Difference]: With dead ends: 196209 [2023-12-21 09:31:06,119 INFO L226 Difference]: Without dead ends: 195788 [2023-12-21 09:31:06,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:31:06,197 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 4 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:31:06,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1691 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:31:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195788 states. [2023-12-21 09:31:12,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195788 to 195786. [2023-12-21 09:31:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195786 states, 165234 states have (on average 1.6118716486921578) internal successors, (266336), 165142 states have internal predecessors, (266336), 30492 states have call successors, (30492), 53 states have call predecessors, (30492), 59 states have return successors, (38165), 30602 states have call predecessors, (38165), 30489 states have call successors, (38165) [2023-12-21 09:31:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195786 states to 195786 states and 334993 transitions. [2023-12-21 09:31:13,643 INFO L78 Accepts]: Start accepts. Automaton has 195786 states and 334993 transitions. Word has length 142 [2023-12-21 09:31:13,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:31:13,643 INFO L495 AbstractCegarLoop]: Abstraction has 195786 states and 334993 transitions. [2023-12-21 09:31:13,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-21 09:31:13,643 INFO L276 IsEmpty]: Start isEmpty. Operand 195786 states and 334993 transitions. [2023-12-21 09:31:13,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 09:31:13,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:31:13,768 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:31:13,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 09:31:13,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-21 09:31:13,971 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:31:13,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:31:13,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1576161318, now seen corresponding path program 1 times [2023-12-21 09:31:13,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:31:13,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684823260] [2023-12-21 09:31:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:31:13,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:31:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:31:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:31:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:31:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:31:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:31:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:31:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:31:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:31:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:31:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:31:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:31:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 09:31:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 09:31:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 09:31:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-21 09:31:14,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:31:14,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684823260] [2023-12-21 09:31:14,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684823260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:31:14,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475592734] [2023-12-21 09:31:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:31:14,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:31:14,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:31:14,484 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 09:31:14,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 09:31:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:31:14,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 09:31:14,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:31:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 09:31:15,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:31:15,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475592734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:31:15,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:31:15,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2023-12-21 09:31:15,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179752615] [2023-12-21 09:31:15,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:31:15,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:31:15,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:31:15,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:31:15,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2023-12-21 09:31:15,010 INFO L87 Difference]: Start difference. First operand 195786 states and 334993 transitions. Second operand has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 9 states have internal predecessors, (105), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-21 09:31:23,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:31:23,617 INFO L93 Difference]: Finished difference Result 388674 states and 676101 transitions. [2023-12-21 09:31:23,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:31:23,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 9 states have internal predecessors, (105), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 141 [2023-12-21 09:31:23,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:31:25,309 INFO L225 Difference]: With dead ends: 388674 [2023-12-21 09:31:25,309 INFO L226 Difference]: Without dead ends: 388148 [2023-12-21 09:31:25,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=1162, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 09:31:25,626 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 718 mSDsluCounter, 3502 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 3963 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 09:31:25,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 3963 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 09:31:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388148 states.