/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_spec11_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 09:34:59,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 09:34:59,670 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 09:34:59,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 09:34:59,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 09:34:59,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 09:34:59,701 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 09:34:59,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 09:34:59,702 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 09:34:59,705 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 09:34:59,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 09:34:59,706 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 09:34:59,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 09:34:59,707 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 09:34:59,707 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 09:34:59,708 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 09:34:59,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 09:34:59,708 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 09:34:59,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 09:34:59,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 09:34:59,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 09:34:59,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 09:34:59,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 09:34:59,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 09:34:59,710 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 09:34:59,710 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 09:34:59,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 09:34:59,710 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 09:34:59,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 09:34:59,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 09:34:59,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 09:34:59,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 09:34:59,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:34:59,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 09:34:59,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 09:34:59,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 09:34:59,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 09:34:59,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 09:34:59,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 09:34:59,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 09:34:59,713 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 09:34:59,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 09:34:59,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 09:34:59,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 09:34:59,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 09:34:59,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 09:34:59,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 09:34:59,931 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 09:34:59,931 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 09:34:59,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product24.cil.c [2023-12-21 09:35:00,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 09:35:01,231 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 09:35:01,232 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product24.cil.c [2023-12-21 09:35:01,247 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad96abe15/ca4c78c5aba64792bc4909b5a540f019/FLAGa67c32906 [2023-12-21 09:35:01,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad96abe15/ca4c78c5aba64792bc4909b5a540f019 [2023-12-21 09:35:01,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 09:35:01,259 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 09:35:01,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 09:35:01,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 09:35:01,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 09:35:01,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592fc3eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01, skipping insertion in model container [2023-12-21 09:35:01,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,307 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 09:35:01,553 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_spec11_product24.cil.c[16887,16900] [2023-12-21 09:35:01,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:35:01,706 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 09:35:01,712 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-12-21 09:35:01,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [375] [2023-12-21 09:35:01,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [741] [2023-12-21 09:35:01,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [750] [2023-12-21 09:35:01,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1821] [2023-12-21 09:35:01,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1856] [2023-12-21 09:35:01,714 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1963] [2023-12-21 09:35:01,714 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2367] [2023-12-21 09:35:01,714 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [2384] [2023-12-21 09:35:01,714 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2403] [2023-12-21 09:35:01,714 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2622] [2023-12-21 09:35:01,743 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_spec11_product24.cil.c[16887,16900] [2023-12-21 09:35:01,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 09:35:01,829 INFO L206 MainTranslator]: Completed translation [2023-12-21 09:35:01,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01 WrapperNode [2023-12-21 09:35:01,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 09:35:01,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 09:35:01,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 09:35:01,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 09:35:01,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,892 INFO L138 Inliner]: procedures = 130, calls = 192, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1038 [2023-12-21 09:35:01,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 09:35:01,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 09:35:01,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 09:35:01,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 09:35:01,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,929 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 09:35:01,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 09:35:01,957 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 09:35:01,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 09:35:01,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 09:35:01,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (1/1) ... [2023-12-21 09:35:01,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 09:35:01,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:35:01,981 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 09:35:02,052 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 09:35:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-21 09:35:02,059 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-21 09:35:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-21 09:35:02,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-21 09:35:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-21 09:35:02,059 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-21 09:35:02,060 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-21 09:35:02,060 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-21 09:35:02,060 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-21 09:35:02,060 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-21 09:35:02,060 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-21 09:35:02,060 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-21 09:35:02,060 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-21 09:35:02,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-21 09:35:02,061 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-12-21 09:35:02,061 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-12-21 09:35:02,062 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-21 09:35:02,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-21 09:35:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 09:35:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-21 09:35:02,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-21 09:35:02,063 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-21 09:35:02,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-21 09:35:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-21 09:35:02,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-21 09:35:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-21 09:35:02,064 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-21 09:35:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-21 09:35:02,064 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-21 09:35:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-21 09:35:02,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-21 09:35:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-21 09:35:02,064 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-21 09:35:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 09:35:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 09:35:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 09:35:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 09:35:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-21 09:35:02,065 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-21 09:35:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 09:35:02,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 09:35:02,247 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 09:35:02,249 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 09:35:02,807 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 09:35:02,841 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 09:35:02,841 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 09:35:02,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:35:02 BoogieIcfgContainer [2023-12-21 09:35:02,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 09:35:02,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 09:35:02,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 09:35:02,845 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 09:35:02,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:35:01" (1/3) ... [2023-12-21 09:35:02,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e255c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:35:02, skipping insertion in model container [2023-12-21 09:35:02,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:35:01" (2/3) ... [2023-12-21 09:35:02,846 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e255c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:35:02, skipping insertion in model container [2023-12-21 09:35:02,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:35:02" (3/3) ... [2023-12-21 09:35:02,847 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product24.cil.c [2023-12-21 09:35:02,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 09:35:02,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 09:35:02,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 09:35:02,893 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;@374e8daa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 09:35:02,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 09:35:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 292 states, 227 states have (on average 1.5991189427312775) internal successors, (363), 229 states have internal predecessors, (363), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-21 09:35:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 09:35:02,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:02,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:02,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:02,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:02,913 INFO L85 PathProgramCache]: Analyzing trace with hash 326833349, now seen corresponding path program 1 times [2023-12-21 09:35:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:02,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285655192] [2023-12-21 09:35:02,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:02,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:35:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:35:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:35:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 09:35:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 09:35:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:35:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:35:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:35:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:35:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 09:35:03,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:03,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285655192] [2023-12-21 09:35:03,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285655192] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:35:03,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063755392] [2023-12-21 09:35:03,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:03,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:35:03,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:35:03,435 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 09:35:03,465 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 09:35:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:03,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 09:35:03,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:35:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 09:35:03,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:35:03,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063755392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:03,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:35:03,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-21 09:35:03,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442635104] [2023-12-21 09:35:03,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:03,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 09:35:03,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:03,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 09:35:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:35:03,738 INFO L87 Difference]: Start difference. First operand has 292 states, 227 states have (on average 1.5991189427312775) internal successors, (363), 229 states have internal predecessors, (363), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:03,826 INFO L93 Difference]: Finished difference Result 435 states and 666 transitions. [2023-12-21 09:35:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 09:35:03,832 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2023-12-21 09:35:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:03,840 INFO L225 Difference]: With dead ends: 435 [2023-12-21 09:35:03,840 INFO L226 Difference]: Without dead ends: 289 [2023-12-21 09:35:03,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 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 09:35:03,848 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:03,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 434 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:35:03,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-21 09:35:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-12-21 09:35:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 225 states have (on average 1.5822222222222222) internal successors, (356), 226 states have internal predecessors, (356), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-21 09:35:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 447 transitions. [2023-12-21 09:35:03,898 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 447 transitions. Word has length 88 [2023-12-21 09:35:03,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:03,899 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 447 transitions. [2023-12-21 09:35:03,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:03,900 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 447 transitions. [2023-12-21 09:35:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 09:35:03,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:03,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:03,916 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 09:35:04,109 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 09:35:04,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:04,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:04,111 INFO L85 PathProgramCache]: Analyzing trace with hash 49885632, now seen corresponding path program 1 times [2023-12-21 09:35:04,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:04,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109239649] [2023-12-21 09:35:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:04,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:35:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:35:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:35:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 09:35:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 09:35:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:35:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:35:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:35:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:35:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 09:35:04,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:04,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109239649] [2023-12-21 09:35:04,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109239649] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:35:04,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808183948] [2023-12-21 09:35:04,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:04,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:35:04,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:35:04,425 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 09:35:04,428 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 09:35:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:04,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 09:35:04,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:35:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 09:35:04,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:35:04,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808183948] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:04,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:35:04,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:35:04,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660180385] [2023-12-21 09:35:04,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:04,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:35:04,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:04,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:35:04,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:35:04,704 INFO L87 Difference]: Start difference. First operand 289 states and 447 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:04,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:04,747 INFO L93 Difference]: Finished difference Result 431 states and 653 transitions. [2023-12-21 09:35:04,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:35:04,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 89 [2023-12-21 09:35:04,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:04,750 INFO L225 Difference]: With dead ends: 431 [2023-12-21 09:35:04,750 INFO L226 Difference]: Without dead ends: 291 [2023-12-21 09:35:04,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 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 09:35:04,752 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 0 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:04,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 861 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:35:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-21 09:35:04,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-12-21 09:35:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 227 states have (on average 1.577092511013216) internal successors, (358), 228 states have internal predecessors, (358), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-21 09:35:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 449 transitions. [2023-12-21 09:35:04,763 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 449 transitions. Word has length 89 [2023-12-21 09:35:04,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:04,764 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 449 transitions. [2023-12-21 09:35:04,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:04,764 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 449 transitions. [2023-12-21 09:35:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 09:35:04,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:04,766 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:04,775 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 09:35:04,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 09:35:04,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:04,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:04,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1195494754, now seen corresponding path program 1 times [2023-12-21 09:35:04,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:04,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030001853] [2023-12-21 09:35:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:35:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:35:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:35:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 09:35:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:35:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:35:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:35:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:35:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:35:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:35:05,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:05,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030001853] [2023-12-21 09:35:05,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030001853] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:35:05,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871627628] [2023-12-21 09:35:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:05,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:35:05,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:35:05,162 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 09:35:05,181 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 09:35:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:35:05,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:35:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 09:35:05,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:35:05,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871627628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:05,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:35:05,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-21 09:35:05,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34140340] [2023-12-21 09:35:05,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:05,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 09:35:05,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:05,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 09:35:05,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-21 09:35:05,446 INFO L87 Difference]: Start difference. First operand 291 states and 449 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:05,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:05,506 INFO L93 Difference]: Finished difference Result 616 states and 964 transitions. [2023-12-21 09:35:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 09:35:05,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 96 [2023-12-21 09:35:05,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:05,509 INFO L225 Difference]: With dead ends: 616 [2023-12-21 09:35:05,509 INFO L226 Difference]: Without dead ends: 347 [2023-12-21 09:35:05,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 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 09:35:05,511 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 109 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 834 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 09:35:05,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 834 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:35:05,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-21 09:35:05,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 342. [2023-12-21 09:35:05,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 267 states have (on average 1.591760299625468) internal successors, (425), 268 states have internal predecessors, (425), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-21 09:35:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 538 transitions. [2023-12-21 09:35:05,524 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 538 transitions. Word has length 96 [2023-12-21 09:35:05,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:05,524 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 538 transitions. [2023-12-21 09:35:05,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 538 transitions. [2023-12-21 09:35:05,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 09:35:05,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:05,527 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:05,535 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 09:35:05,752 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 09:35:05,753 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:05,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:05,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1633248361, now seen corresponding path program 1 times [2023-12-21 09:35:05,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:05,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270113836] [2023-12-21 09:35:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:05,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 09:35:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 09:35:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 09:35:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 09:35:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:35:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:35:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:35:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:35:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:35:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:35:05,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:05,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270113836] [2023-12-21 09:35:05,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270113836] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:35:05,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741899584] [2023-12-21 09:35:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:05,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:35:05,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:35:05,886 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 09:35:05,888 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 09:35:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 09:35:06,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:35:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 09:35:06,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:35:06,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741899584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:06,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:35:06,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 09:35:06,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127446511] [2023-12-21 09:35:06,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:06,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:35:06,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:06,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:35:06,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:35:06,153 INFO L87 Difference]: Start difference. First operand 342 states and 538 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:35:06,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:06,228 INFO L93 Difference]: Finished difference Result 679 states and 1070 transitions. [2023-12-21 09:35:06,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:35:06,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2023-12-21 09:35:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:06,231 INFO L225 Difference]: With dead ends: 679 [2023-12-21 09:35:06,231 INFO L226 Difference]: Without dead ends: 344 [2023-12-21 09:35:06,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 114 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 09:35:06,233 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 8 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:06,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1677 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 09:35:06,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-21 09:35:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2023-12-21 09:35:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 268 states have (on average 1.5895522388059702) internal successors, (426), 270 states have internal predecessors, (426), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2023-12-21 09:35:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 541 transitions. [2023-12-21 09:35:06,245 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 541 transitions. Word has length 97 [2023-12-21 09:35:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:06,245 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 541 transitions. [2023-12-21 09:35:06,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:35:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 541 transitions. [2023-12-21 09:35:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 09:35:06,249 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:06,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:06,258 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 09:35:06,458 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 09:35:06,458 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:06,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:06,459 INFO L85 PathProgramCache]: Analyzing trace with hash -188497324, now seen corresponding path program 1 times [2023-12-21 09:35:06,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:06,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843859054] [2023-12-21 09:35:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:06,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 09:35:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 09:35:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 09:35:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:35:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:35:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:35:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:35:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:35:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 09:35:06,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:06,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843859054] [2023-12-21 09:35:06,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843859054] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:35:06,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661779285] [2023-12-21 09:35:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:06,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:35:06,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:35:06,602 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 09:35:06,607 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 09:35:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:06,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 09:35:06,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:35:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 09:35:06,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:35:06,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661779285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:06,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:35:06,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-21 09:35:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881842700] [2023-12-21 09:35:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:06,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:35:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:35:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:35:06,898 INFO L87 Difference]: Start difference. First operand 344 states and 541 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:35:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:06,973 INFO L93 Difference]: Finished difference Result 681 states and 1075 transitions. [2023-12-21 09:35:06,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:35:06,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 98 [2023-12-21 09:35:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:06,975 INFO L225 Difference]: With dead ends: 681 [2023-12-21 09:35:06,976 INFO L226 Difference]: Without dead ends: 346 [2023-12-21 09:35:06,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 114 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 09:35:06,977 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 8 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:06,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1663 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 09:35:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-21 09:35:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2023-12-21 09:35:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 269 states have (on average 1.587360594795539) internal successors, (427), 272 states have internal predecessors, (427), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-12-21 09:35:06,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 547 transitions. [2023-12-21 09:35:06,988 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 547 transitions. Word has length 98 [2023-12-21 09:35:06,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:06,988 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 547 transitions. [2023-12-21 09:35:06,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:35:06,988 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 547 transitions. [2023-12-21 09:35:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 09:35:06,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:06,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:06,996 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 09:35:07,196 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 09:35:07,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:07,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash -918403521, now seen corresponding path program 1 times [2023-12-21 09:35:07,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:07,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190129204] [2023-12-21 09:35:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:07,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 09:35:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 09:35:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 09:35:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:35:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:35:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:35:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:35:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:35:07,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:07,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190129204] [2023-12-21 09:35:07,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190129204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:07,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:07,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:35:07,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435033639] [2023-12-21 09:35:07,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:07,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:35:07,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:07,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:35:07,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:35:07,339 INFO L87 Difference]: Start difference. First operand 346 states and 547 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:35:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:08,939 INFO L93 Difference]: Finished difference Result 832 states and 1333 transitions. [2023-12-21 09:35:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:35:08,940 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2023-12-21 09:35:08,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:08,943 INFO L225 Difference]: With dead ends: 832 [2023-12-21 09:35:08,943 INFO L226 Difference]: Without dead ends: 505 [2023-12-21 09:35:08,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-21 09:35:08,945 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 978 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:08,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1011 Invalid, 2800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 09:35:08,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-12-21 09:35:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 346. [2023-12-21 09:35:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 269 states have (on average 1.587360594795539) internal successors, (427), 272 states have internal predecessors, (427), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2023-12-21 09:35:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 546 transitions. [2023-12-21 09:35:08,964 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 546 transitions. Word has length 99 [2023-12-21 09:35:08,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:08,964 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 546 transitions. [2023-12-21 09:35:08,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:35:08,964 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 546 transitions. [2023-12-21 09:35:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 09:35:08,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:08,965 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:08,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 09:35:08,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:08,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:08,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2078415608, now seen corresponding path program 2 times [2023-12-21 09:35:08,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:08,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134539821] [2023-12-21 09:35:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:08,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 09:35:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 09:35:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 09:35:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:35:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 09:35:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:35:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:35:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:09,113 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:35:09,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:09,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134539821] [2023-12-21 09:35:09,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134539821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:09,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:09,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:35:09,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084651924] [2023-12-21 09:35:09,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:09,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:35:09,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:09,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:35:09,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:35:09,114 INFO L87 Difference]: Start difference. First operand 346 states and 546 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:35:10,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:10,579 INFO L93 Difference]: Finished difference Result 834 states and 1336 transitions. [2023-12-21 09:35:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 09:35:10,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2023-12-21 09:35:10,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:10,582 INFO L225 Difference]: With dead ends: 834 [2023-12-21 09:35:10,582 INFO L226 Difference]: Without dead ends: 507 [2023-12-21 09:35:10,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 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 09:35:10,584 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 986 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:10,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1011 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:35:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2023-12-21 09:35:10,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 348. [2023-12-21 09:35:10,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 270 states have (on average 1.5851851851851853) internal successors, (428), 274 states have internal predecessors, (428), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2023-12-21 09:35:10,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 549 transitions. [2023-12-21 09:35:10,599 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 549 transitions. Word has length 100 [2023-12-21 09:35:10,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:10,599 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 549 transitions. [2023-12-21 09:35:10,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:35:10,600 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 549 transitions. [2023-12-21 09:35:10,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 09:35:10,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:10,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:10,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 09:35:10,601 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:10,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1108276250, now seen corresponding path program 1 times [2023-12-21 09:35:10,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:10,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719441705] [2023-12-21 09:35:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:10,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:35:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 09:35:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:35:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:35:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:35:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:35:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:35:10,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:10,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719441705] [2023-12-21 09:35:10,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719441705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:10,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:10,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 09:35:10,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477063132] [2023-12-21 09:35:10,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:10,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 09:35:10,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:10,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 09:35:10,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 09:35:10,712 INFO L87 Difference]: Start difference. First operand 348 states and 549 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:35:12,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:12,181 INFO L93 Difference]: Finished difference Result 834 states and 1335 transitions. [2023-12-21 09:35:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 09:35:12,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2023-12-21 09:35:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:12,184 INFO L225 Difference]: With dead ends: 834 [2023-12-21 09:35:12,184 INFO L226 Difference]: Without dead ends: 507 [2023-12-21 09:35:12,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-12-21 09:35:12,186 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 986 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:12,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1010 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2433 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 09:35:12,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2023-12-21 09:35:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 348. [2023-12-21 09:35:12,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 270 states have (on average 1.5851851851851853) internal successors, (428), 274 states have internal predecessors, (428), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2023-12-21 09:35:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 549 transitions. [2023-12-21 09:35:12,200 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 549 transitions. Word has length 101 [2023-12-21 09:35:12,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:12,201 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 549 transitions. [2023-12-21 09:35:12,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (14), 6 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 09:35:12,201 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 549 transitions. [2023-12-21 09:35:12,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 09:35:12,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:12,202 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:12,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 09:35:12,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:12,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:12,202 INFO L85 PathProgramCache]: Analyzing trace with hash -615650076, now seen corresponding path program 1 times [2023-12-21 09:35:12,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:12,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155741914] [2023-12-21 09:35:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 09:35:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 09:35:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:35:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:35:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:35:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:35:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 09:35:12,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:12,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155741914] [2023-12-21 09:35:12,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155741914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:12,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:12,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:35:12,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467696567] [2023-12-21 09:35:12,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:12,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:35:12,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:12,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:35:12,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:35:12,365 INFO L87 Difference]: Start difference. First operand 348 states and 549 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 09:35:14,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:14,470 INFO L93 Difference]: Finished difference Result 832 states and 1330 transitions. [2023-12-21 09:35:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:35:14,471 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 101 [2023-12-21 09:35:14,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:14,473 INFO L225 Difference]: With dead ends: 832 [2023-12-21 09:35:14,473 INFO L226 Difference]: Without dead ends: 507 [2023-12-21 09:35:14,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-21 09:35:14,475 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 994 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 3974 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 4280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 3974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:14,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1396 Invalid, 4280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 3974 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-21 09:35:14,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2023-12-21 09:35:14,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 348. [2023-12-21 09:35:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 270 states have (on average 1.5851851851851853) internal successors, (428), 274 states have internal predecessors, (428), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-12-21 09:35:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 548 transitions. [2023-12-21 09:35:14,491 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 548 transitions. Word has length 101 [2023-12-21 09:35:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:14,492 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 548 transitions. [2023-12-21 09:35:14,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 8 states have internal predecessors, (66), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 09:35:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 548 transitions. [2023-12-21 09:35:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 09:35:14,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:14,494 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:14,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 09:35:14,494 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:14,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:14,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2062332213, now seen corresponding path program 2 times [2023-12-21 09:35:14,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:14,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404621275] [2023-12-21 09:35:14,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:14,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 09:35:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:35:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:35:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:35:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:35:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:35:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:14,654 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 09:35:14,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:14,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404621275] [2023-12-21 09:35:14,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404621275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:14,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:14,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 09:35:14,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413775256] [2023-12-21 09:35:14,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:14,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:35:14,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:14,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:35:14,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:35:14,656 INFO L87 Difference]: Start difference. First operand 348 states and 548 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 09:35:16,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:16,598 INFO L93 Difference]: Finished difference Result 834 states and 1336 transitions. [2023-12-21 09:35:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 09:35:16,599 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 102 [2023-12-21 09:35:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:16,601 INFO L225 Difference]: With dead ends: 834 [2023-12-21 09:35:16,601 INFO L226 Difference]: Without dead ends: 509 [2023-12-21 09:35:16,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 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 09:35:16,603 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 987 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 4020 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 4338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 4020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:16,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1396 Invalid, 4338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 4020 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 09:35:16,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-12-21 09:35:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 350. [2023-12-21 09:35:16,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 271 states have (on average 1.5830258302583027) internal successors, (429), 276 states have internal predecessors, (429), 57 states have call successors, (57), 17 states have call predecessors, (57), 21 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2023-12-21 09:35:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 554 transitions. [2023-12-21 09:35:16,622 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 554 transitions. Word has length 102 [2023-12-21 09:35:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:16,622 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 554 transitions. [2023-12-21 09:35:16,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 8 states have internal predecessors, (67), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-12-21 09:35:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 554 transitions. [2023-12-21 09:35:16,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 09:35:16,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:16,624 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:16,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 09:35:16,624 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:16,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:16,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1863054263, now seen corresponding path program 1 times [2023-12-21 09:35:16,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:16,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953441573] [2023-12-21 09:35:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:16,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 09:35:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:35:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:35:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:35:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:35:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:35:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 09:35:16,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:16,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953441573] [2023-12-21 09:35:16,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953441573] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:35:16,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44131648] [2023-12-21 09:35:16,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:16,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:35:16,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:35:16,761 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 09:35:16,786 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 09:35:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:16,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 09:35:16,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:35:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:17,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:35:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:17,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44131648] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:35:17,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:35:17,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-12-21 09:35:17,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197284036] [2023-12-21 09:35:17,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:35:17,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 09:35:17,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:17,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 09:35:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-21 09:35:17,063 INFO L87 Difference]: Start difference. First operand 350 states and 554 transitions. Second operand has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-21 09:35:19,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:19,360 INFO L93 Difference]: Finished difference Result 1183 states and 1982 transitions. [2023-12-21 09:35:19,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 09:35:19,360 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 103 [2023-12-21 09:35:19,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:19,364 INFO L225 Difference]: With dead ends: 1183 [2023-12-21 09:35:19,365 INFO L226 Difference]: Without dead ends: 859 [2023-12-21 09:35:19,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 226 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 09:35:19,367 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 2060 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 5050 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 5693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 5050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:19,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2077 Valid, 1673 Invalid, 5693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 5050 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 09:35:19,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-12-21 09:35:19,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 685. [2023-12-21 09:35:19,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 542 states have (on average 1.6273062730627306) internal successors, (882), 547 states have internal predecessors, (882), 121 states have call successors, (121), 17 states have call predecessors, (121), 21 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2023-12-21 09:35:19,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1145 transitions. [2023-12-21 09:35:19,393 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1145 transitions. Word has length 103 [2023-12-21 09:35:19,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:19,393 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1145 transitions. [2023-12-21 09:35:19,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2023-12-21 09:35:19,394 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1145 transitions. [2023-12-21 09:35:19,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 09:35:19,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:19,395 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:19,413 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 09:35:19,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:35:19,603 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:19,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:19,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1453271016, now seen corresponding path program 1 times [2023-12-21 09:35:19,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:19,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839998247] [2023-12-21 09:35:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:19,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 09:35:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:35:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 09:35:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:35:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:35:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:35:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:19,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:19,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839998247] [2023-12-21 09:35:19,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839998247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:19,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:19,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:35:19,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320882847] [2023-12-21 09:35:19,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:19,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:35:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:35:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:35:19,681 INFO L87 Difference]: Start difference. First operand 685 states and 1145 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:20,891 INFO L93 Difference]: Finished difference Result 1778 states and 3041 transitions. [2023-12-21 09:35:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:35:20,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2023-12-21 09:35:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:20,897 INFO L225 Difference]: With dead ends: 1778 [2023-12-21 09:35:20,897 INFO L226 Difference]: Without dead ends: 1161 [2023-12-21 09:35:20,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 09:35:20,899 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 1090 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:20,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 775 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:35:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-12-21 09:35:20,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 997. [2023-12-21 09:35:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 790 states have (on average 1.6379746835443039) internal successors, (1294), 795 states have internal predecessors, (1294), 185 states have call successors, (185), 17 states have call predecessors, (185), 21 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2023-12-21 09:35:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1695 transitions. [2023-12-21 09:35:20,934 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1695 transitions. Word has length 107 [2023-12-21 09:35:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:20,934 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1695 transitions. [2023-12-21 09:35:20,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:20,934 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1695 transitions. [2023-12-21 09:35:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 09:35:20,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:20,937 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:20,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 09:35:20,938 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:20,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1703025072, now seen corresponding path program 1 times [2023-12-21 09:35:20,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:20,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643380604] [2023-12-21 09:35:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:20,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 09:35:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:35:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 09:35:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:35:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:35:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:35:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:21,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:21,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643380604] [2023-12-21 09:35:21,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643380604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:21,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:21,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:35:21,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710418513] [2023-12-21 09:35:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:21,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:35:21,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:35:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:35:21,081 INFO L87 Difference]: Start difference. First operand 997 states and 1695 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:22,014 INFO L93 Difference]: Finished difference Result 2547 states and 4389 transitions. [2023-12-21 09:35:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:35:22,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-12-21 09:35:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:22,023 INFO L225 Difference]: With dead ends: 2547 [2023-12-21 09:35:22,023 INFO L226 Difference]: Without dead ends: 1668 [2023-12-21 09:35:22,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 09:35:22,028 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1095 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:22,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 738 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:35:22,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2023-12-21 09:35:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1504. [2023-12-21 09:35:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1202 states have (on average 1.642262895174709) internal successors, (1974), 1207 states have internal predecessors, (1974), 280 states have call successors, (280), 17 states have call predecessors, (280), 21 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2023-12-21 09:35:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2565 transitions. [2023-12-21 09:35:22,076 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2565 transitions. Word has length 108 [2023-12-21 09:35:22,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:22,077 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 2565 transitions. [2023-12-21 09:35:22,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2565 transitions. [2023-12-21 09:35:22,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 09:35:22,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:22,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:22,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 09:35:22,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:22,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:22,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1541104282, now seen corresponding path program 1 times [2023-12-21 09:35:22,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:22,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67966216] [2023-12-21 09:35:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:22,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 09:35:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:35:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 09:35:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:35:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:35:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:35:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:22,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:22,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67966216] [2023-12-21 09:35:22,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67966216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:22,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:22,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:35:22,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360810469] [2023-12-21 09:35:22,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:22,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:35:22,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:22,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:35:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:35:22,147 INFO L87 Difference]: Start difference. First operand 1504 states and 2565 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:23,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:23,215 INFO L93 Difference]: Finished difference Result 3693 states and 6414 transitions. [2023-12-21 09:35:23,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:35:23,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2023-12-21 09:35:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:23,228 INFO L225 Difference]: With dead ends: 3693 [2023-12-21 09:35:23,228 INFO L226 Difference]: Without dead ends: 2435 [2023-12-21 09:35:23,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 09:35:23,233 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1093 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:23,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 737 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 09:35:23,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-12-21 09:35:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2271. [2023-12-21 09:35:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 1846 states have (on average 1.6462621885157096) internal successors, (3039), 1851 states have internal predecessors, (3039), 403 states have call successors, (403), 17 states have call predecessors, (403), 21 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2023-12-21 09:35:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3892 transitions. [2023-12-21 09:35:23,336 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3892 transitions. Word has length 109 [2023-12-21 09:35:23,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:23,336 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 3892 transitions. [2023-12-21 09:35:23,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:23,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3892 transitions. [2023-12-21 09:35:23,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 09:35:23,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:23,344 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:23,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 09:35:23,344 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:23,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1533141905, now seen corresponding path program 1 times [2023-12-21 09:35:23,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:23,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932813826] [2023-12-21 09:35:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:23,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 09:35:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:35:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 09:35:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:35:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:35:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:35:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:23,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:23,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932813826] [2023-12-21 09:35:23,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932813826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:23,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:23,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:35:23,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779819690] [2023-12-21 09:35:23,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:23,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:35:23,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:23,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:35:23,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:35:23,428 INFO L87 Difference]: Start difference. First operand 2271 states and 3892 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:24,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:24,749 INFO L93 Difference]: Finished difference Result 5475 states and 9572 transitions. [2023-12-21 09:35:24,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:35:24,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2023-12-21 09:35:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:24,762 INFO L225 Difference]: With dead ends: 5475 [2023-12-21 09:35:24,762 INFO L226 Difference]: Without dead ends: 3659 [2023-12-21 09:35:24,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 09:35:24,767 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1077 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:24,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 735 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 09:35:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2023-12-21 09:35:24,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3495. [2023-12-21 09:35:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 2891 states have (on average 1.6489104116222761) internal successors, (4767), 2896 states have internal predecessors, (4767), 582 states have call successors, (582), 17 states have call predecessors, (582), 21 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2023-12-21 09:35:24,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 6004 transitions. [2023-12-21 09:35:24,911 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 6004 transitions. Word has length 110 [2023-12-21 09:35:24,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:24,911 INFO L495 AbstractCegarLoop]: Abstraction has 3495 states and 6004 transitions. [2023-12-21 09:35:24,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 6004 transitions. [2023-12-21 09:35:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 09:35:24,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:24,918 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:24,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 09:35:24,918 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:24,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:24,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1143860450, now seen corresponding path program 1 times [2023-12-21 09:35:24,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:24,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333081821] [2023-12-21 09:35:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:24,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 09:35:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:35:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 09:35:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:35:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:35:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 09:35:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:24,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:24,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333081821] [2023-12-21 09:35:24,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333081821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:24,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:24,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:35:24,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677167164] [2023-12-21 09:35:24,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:24,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:35:24,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:24,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:35:24,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:35:24,995 INFO L87 Difference]: Start difference. First operand 3495 states and 6004 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:26,178 INFO L93 Difference]: Finished difference Result 8454 states and 14812 transitions. [2023-12-21 09:35:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:35:26,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2023-12-21 09:35:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:26,214 INFO L225 Difference]: With dead ends: 8454 [2023-12-21 09:35:26,214 INFO L226 Difference]: Without dead ends: 5717 [2023-12-21 09:35:26,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 09:35:26,245 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 1087 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:26,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 758 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:35:26,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5717 states. [2023-12-21 09:35:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5717 to 5553. [2023-12-21 09:35:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 4573 states have (on average 1.6378744806472776) internal successors, (7490), 4578 states have internal predecessors, (7490), 958 states have call successors, (958), 17 states have call predecessors, (958), 21 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2023-12-21 09:35:26,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 9523 transitions. [2023-12-21 09:35:26,526 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 9523 transitions. Word has length 111 [2023-12-21 09:35:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:26,526 INFO L495 AbstractCegarLoop]: Abstraction has 5553 states and 9523 transitions. [2023-12-21 09:35:26,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 9523 transitions. [2023-12-21 09:35:26,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 09:35:26,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:26,536 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:26,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 09:35:26,536 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:26,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:26,537 INFO L85 PathProgramCache]: Analyzing trace with hash 259706901, now seen corresponding path program 1 times [2023-12-21 09:35:26,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:26,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422660800] [2023-12-21 09:35:26,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:26,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 09:35:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:35:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 09:35:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:35:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:35:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-21 09:35:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:26,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422660800] [2023-12-21 09:35:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422660800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:26,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:26,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:35:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733601450] [2023-12-21 09:35:26,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:26,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:35:26,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:26,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:35:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:35:26,597 INFO L87 Difference]: Start difference. First operand 5553 states and 9523 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:27,732 INFO L93 Difference]: Finished difference Result 13815 states and 24169 transitions. [2023-12-21 09:35:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:35:27,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2023-12-21 09:35:27,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:27,798 INFO L225 Difference]: With dead ends: 13815 [2023-12-21 09:35:27,798 INFO L226 Difference]: Without dead ends: 9406 [2023-12-21 09:35:27,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 09:35:27,814 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1090 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:27,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 745 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 09:35:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9406 states. [2023-12-21 09:35:28,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9406 to 9242. [2023-12-21 09:35:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9242 states, 7656 states have (on average 1.6353187042842214) internal successors, (12520), 7661 states have internal predecessors, (12520), 1564 states have call successors, (1564), 17 states have call predecessors, (1564), 21 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2023-12-21 09:35:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9242 states to 9242 states and 15843 transitions. [2023-12-21 09:35:28,103 INFO L78 Accepts]: Start accepts. Automaton has 9242 states and 15843 transitions. Word has length 112 [2023-12-21 09:35:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:28,103 INFO L495 AbstractCegarLoop]: Abstraction has 9242 states and 15843 transitions. [2023-12-21 09:35:28,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 9242 states and 15843 transitions. [2023-12-21 09:35:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 09:35:28,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:28,116 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:28,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 09:35:28,116 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:28,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1565049712, now seen corresponding path program 1 times [2023-12-21 09:35:28,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:28,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8615630] [2023-12-21 09:35:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 09:35:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:35:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 09:35:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:35:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:35:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 09:35:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:28,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:28,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8615630] [2023-12-21 09:35:28,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8615630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:28,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:28,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:35:28,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516383162] [2023-12-21 09:35:28,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:28,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:35:28,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:28,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:35:28,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:35:28,189 INFO L87 Difference]: Start difference. First operand 9242 states and 15843 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:29,464 INFO L93 Difference]: Finished difference Result 24007 states and 41933 transitions. [2023-12-21 09:35:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:35:29,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2023-12-21 09:35:29,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:29,589 INFO L225 Difference]: With dead ends: 24007 [2023-12-21 09:35:29,589 INFO L226 Difference]: Without dead ends: 16366 [2023-12-21 09:35:29,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 09:35:29,624 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1080 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:29,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 766 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 09:35:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16366 states. [2023-12-21 09:35:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16366 to 16202. [2023-12-21 09:35:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16202 states, 13413 states have (on average 1.62625810780586) internal successors, (21813), 13418 states have internal predecessors, (21813), 2767 states have call successors, (2767), 17 states have call predecessors, (2767), 21 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2023-12-21 09:35:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16202 states to 16202 states and 27686 transitions. [2023-12-21 09:35:30,298 INFO L78 Accepts]: Start accepts. Automaton has 16202 states and 27686 transitions. Word has length 113 [2023-12-21 09:35:30,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:30,298 INFO L495 AbstractCegarLoop]: Abstraction has 16202 states and 27686 transitions. [2023-12-21 09:35:30,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:30,298 INFO L276 IsEmpty]: Start isEmpty. Operand 16202 states and 27686 transitions. [2023-12-21 09:35:30,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 09:35:30,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:30,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:30,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 09:35:30,321 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:30,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:30,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1287154454, now seen corresponding path program 1 times [2023-12-21 09:35:30,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:30,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743529354] [2023-12-21 09:35:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:30,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 09:35:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:35:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 09:35:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 09:35:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 09:35:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:35:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:30,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:30,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743529354] [2023-12-21 09:35:30,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743529354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:30,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:30,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:35:30,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314441881] [2023-12-21 09:35:30,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:30,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:35:30,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:30,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:35:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:35:30,393 INFO L87 Difference]: Start difference. First operand 16202 states and 27686 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:31,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:31,981 INFO L93 Difference]: Finished difference Result 42982 states and 74945 transitions. [2023-12-21 09:35:31,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:35:31,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2023-12-21 09:35:31,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:32,057 INFO L225 Difference]: With dead ends: 42982 [2023-12-21 09:35:32,058 INFO L226 Difference]: Without dead ends: 29029 [2023-12-21 09:35:32,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 09:35:32,084 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1073 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:32,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 737 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 09:35:32,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29029 states. [2023-12-21 09:35:32,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29029 to 28865. [2023-12-21 09:35:32,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28865 states, 24037 states have (on average 1.6224570453883596) internal successors, (38999), 24042 states have internal predecessors, (38999), 4806 states have call successors, (4806), 17 states have call predecessors, (4806), 21 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2023-12-21 09:35:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28865 states to 28865 states and 49224 transitions. [2023-12-21 09:35:32,940 INFO L78 Accepts]: Start accepts. Automaton has 28865 states and 49224 transitions. Word has length 114 [2023-12-21 09:35:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:32,940 INFO L495 AbstractCegarLoop]: Abstraction has 28865 states and 49224 transitions. [2023-12-21 09:35:32,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 28865 states and 49224 transitions. [2023-12-21 09:35:32,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 09:35:32,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:32,967 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:32,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 09:35:32,967 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:32,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash 113905074, now seen corresponding path program 1 times [2023-12-21 09:35:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350978829] [2023-12-21 09:35:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 09:35:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 09:35:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 09:35:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 09:35:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 09:35:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:35:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:33,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:33,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350978829] [2023-12-21 09:35:33,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350978829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:33,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:33,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:35:33,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133609771] [2023-12-21 09:35:33,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:33,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:35:33,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:33,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:35:33,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:35:33,043 INFO L87 Difference]: Start difference. First operand 28865 states and 49224 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:35,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:35,671 INFO L93 Difference]: Finished difference Result 78754 states and 136504 transitions. [2023-12-21 09:35:35,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:35:35,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2023-12-21 09:35:35,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:35,844 INFO L225 Difference]: With dead ends: 78754 [2023-12-21 09:35:35,844 INFO L226 Difference]: Without dead ends: 52917 [2023-12-21 09:35:35,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-21 09:35:35,905 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1071 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:35,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 737 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 09:35:35,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52917 states. [2023-12-21 09:35:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52917 to 52753. [2023-12-21 09:35:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52753 states, 44210 states have (on average 1.6174847319610948) internal successors, (71509), 44215 states have internal predecessors, (71509), 8521 states have call successors, (8521), 17 states have call predecessors, (8521), 21 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2023-12-21 09:35:37,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52753 states to 52753 states and 89696 transitions. [2023-12-21 09:35:37,711 INFO L78 Accepts]: Start accepts. Automaton has 52753 states and 89696 transitions. Word has length 115 [2023-12-21 09:35:37,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:37,711 INFO L495 AbstractCegarLoop]: Abstraction has 52753 states and 89696 transitions. [2023-12-21 09:35:37,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:37,712 INFO L276 IsEmpty]: Start isEmpty. Operand 52753 states and 89696 transitions. [2023-12-21 09:35:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-21 09:35:37,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:37,732 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:37,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 09:35:37,732 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:37,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1987932938, now seen corresponding path program 1 times [2023-12-21 09:35:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:37,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171343583] [2023-12-21 09:35:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:37,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 09:35:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 09:35:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 09:35:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 09:35:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 09:35:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 09:35:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:35:37,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:37,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171343583] [2023-12-21 09:35:37,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171343583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:35:37,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:35:37,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 09:35:37,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855293947] [2023-12-21 09:35:37,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:35:37,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 09:35:37,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:37,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 09:35:37,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 09:35:37,800 INFO L87 Difference]: Start difference. First operand 52753 states and 89696 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:41,024 INFO L93 Difference]: Finished difference Result 98529 states and 171209 transitions. [2023-12-21 09:35:41,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 09:35:41,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 116 [2023-12-21 09:35:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:41,466 INFO L225 Difference]: With dead ends: 98529 [2023-12-21 09:35:41,466 INFO L226 Difference]: Without dead ends: 98389 [2023-12-21 09:35:41,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 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 09:35:41,502 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1063 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:41,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 740 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 09:35:41,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98389 states. [2023-12-21 09:35:44,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98389 to 98225. [2023-12-21 09:35:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98225 states, 82883 states have (on average 1.6111627233570214) internal successors, (133538), 82888 states have internal predecessors, (133538), 15320 states have call successors, (15320), 17 states have call predecessors, (15320), 21 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2023-12-21 09:35:44,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98225 states to 98225 states and 166369 transitions. [2023-12-21 09:35:44,887 INFO L78 Accepts]: Start accepts. Automaton has 98225 states and 166369 transitions. Word has length 116 [2023-12-21 09:35:44,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:35:44,888 INFO L495 AbstractCegarLoop]: Abstraction has 98225 states and 166369 transitions. [2023-12-21 09:35:44,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-21 09:35:44,888 INFO L276 IsEmpty]: Start isEmpty. Operand 98225 states and 166369 transitions. [2023-12-21 09:35:44,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-21 09:35:44,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:35:44,912 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:35:44,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 09:35:44,913 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:35:44,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:35:44,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1509520945, now seen corresponding path program 1 times [2023-12-21 09:35:44,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:35:44,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506577114] [2023-12-21 09:35:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:44,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:35:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:35:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:35:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:35:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:35:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:35:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:35:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:35:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:35:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 09:35:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 09:35:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 09:35:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 09:35:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 09:35:45,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:35:45,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506577114] [2023-12-21 09:35:45,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506577114] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:35:45,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080500013] [2023-12-21 09:35:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:35:45,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:35:45,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:35:45,048 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 09:35:45,050 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 09:35:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:35:45,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 09:35:45,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:35:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 09:35:45,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 09:35:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 09:35:45,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080500013] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 09:35:45,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 09:35:45,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2023-12-21 09:35:45,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859747692] [2023-12-21 09:35:45,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 09:35:45,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 09:35:45,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:35:45,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 09:35:45,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2023-12-21 09:35:45,777 INFO L87 Difference]: Start difference. First operand 98225 states and 166369 transitions. Second operand has 22 states, 21 states have (on average 9.476190476190476) internal successors, (199), 17 states have internal predecessors, (199), 4 states have call successors, (39), 10 states have call predecessors, (39), 8 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) [2023-12-21 09:35:53,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:35:53,885 INFO L93 Difference]: Finished difference Result 197142 states and 344763 transitions. [2023-12-21 09:35:53,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 09:35:53,886 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 9.476190476190476) internal successors, (199), 17 states have internal predecessors, (199), 4 states have call successors, (39), 10 states have call predecessors, (39), 8 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) Word has length 117 [2023-12-21 09:35:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:35:54,739 INFO L225 Difference]: With dead ends: 197142 [2023-12-21 09:35:54,740 INFO L226 Difference]: Without dead ends: 197007 [2023-12-21 09:35:54,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=828, Invalid=3462, Unknown=0, NotChecked=0, Total=4290 [2023-12-21 09:35:54,815 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 3719 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 8580 mSolverCounterSat, 1006 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 9586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1006 IncrementalHoareTripleChecker+Valid, 8580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-21 09:35:54,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3744 Valid, 2194 Invalid, 9586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1006 Valid, 8580 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-21 09:35:54,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197007 states. [2023-12-21 09:36:01,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197007 to 196455. [2023-12-21 09:36:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196455 states, 165773 states have (on average 1.6111550131806749) internal successors, (267086), 165780 states have internal predecessors, (267086), 30638 states have call successors, (30638), 36 states have call predecessors, (30638), 43 states have return successors, (37200), 30638 states have call predecessors, (37200), 30636 states have call successors, (37200) [2023-12-21 09:36:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196455 states to 196455 states and 334924 transitions. [2023-12-21 09:36:02,468 INFO L78 Accepts]: Start accepts. Automaton has 196455 states and 334924 transitions. Word has length 117 [2023-12-21 09:36:02,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:36:02,468 INFO L495 AbstractCegarLoop]: Abstraction has 196455 states and 334924 transitions. [2023-12-21 09:36:02,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 9.476190476190476) internal successors, (199), 17 states have internal predecessors, (199), 4 states have call successors, (39), 10 states have call predecessors, (39), 8 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) [2023-12-21 09:36:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 196455 states and 334924 transitions. [2023-12-21 09:36:02,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 09:36:02,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:36:02,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:36:02,550 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 09:36:02,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:36:02,740 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:36:02,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:36:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1953113514, now seen corresponding path program 1 times [2023-12-21 09:36:02,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:36:02,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303338828] [2023-12-21 09:36:02,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:36:02,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:36:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:36:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:36:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 09:36:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 09:36:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 09:36:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 09:36:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 09:36:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 09:36:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:36:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:36:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:36:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:36:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:36:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 09:36:02,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:36:02,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303338828] [2023-12-21 09:36:02,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303338828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:36:02,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 09:36:02,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 09:36:02,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284695404] [2023-12-21 09:36:02,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:36:02,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 09:36:02,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:36:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 09:36:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 09:36:02,887 INFO L87 Difference]: Start difference. First operand 196455 states and 334924 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (15), 7 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:36:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:36:09,165 INFO L93 Difference]: Finished difference Result 197494 states and 343106 transitions. [2023-12-21 09:36:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 09:36:09,166 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (15), 7 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2023-12-21 09:36:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:36:10,126 INFO L225 Difference]: With dead ends: 197494 [2023-12-21 09:36:10,126 INFO L226 Difference]: Without dead ends: 196972 [2023-12-21 09:36:10,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2023-12-21 09:36:10,194 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 2112 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 3074 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 3704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 3074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 09:36:10,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2128 Valid, 1102 Invalid, 3704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 3074 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 09:36:10,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196972 states. [2023-12-21 09:36:16,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196972 to 196565. [2023-12-21 09:36:16,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196565 states, 165869 states have (on average 1.611120824264932) internal successors, (267235), 165875 states have internal predecessors, (267235), 30652 states have call successors, (30652), 38 states have call predecessors, (30652), 43 states have return successors, (37214), 30651 states have call predecessors, (37214), 30650 states have call successors, (37214) [2023-12-21 09:36:18,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196565 states to 196565 states and 335101 transitions. [2023-12-21 09:36:18,086 INFO L78 Accepts]: Start accepts. Automaton has 196565 states and 335101 transitions. Word has length 125 [2023-12-21 09:36:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:36:18,087 INFO L495 AbstractCegarLoop]: Abstraction has 196565 states and 335101 transitions. [2023-12-21 09:36:18,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (15), 7 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-21 09:36:18,087 INFO L276 IsEmpty]: Start isEmpty. Operand 196565 states and 335101 transitions. [2023-12-21 09:36:18,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-21 09:36:18,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:36:18,451 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:36:18,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 09:36:18,451 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:36:18,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:36:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1922729791, now seen corresponding path program 1 times [2023-12-21 09:36:18,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:36:18,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914414372] [2023-12-21 09:36:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:36:18,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:36:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:36:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:36:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-21 09:36:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-21 09:36:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 09:36:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-21 09:36:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 09:36:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 09:36:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 09:36:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 09:36:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 09:36:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 09:36:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 09:36:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:36:18,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:36:18,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914414372] [2023-12-21 09:36:18,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914414372] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:36:18,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877071164] [2023-12-21 09:36:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:36:18,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:36:18,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:36:18,543 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 09:36:18,545 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 09:36:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:18,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 09:36:18,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:36:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-21 09:36:18,803 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:36:18,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877071164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:36:18,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:36:18,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 09:36:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781685915] [2023-12-21 09:36:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:36:18,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 09:36:18,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:36:18,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 09:36:18,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 09:36:18,805 INFO L87 Difference]: Start difference. First operand 196565 states and 335101 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:36:23,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:36:23,701 INFO L93 Difference]: Finished difference Result 294857 states and 504844 transitions. [2023-12-21 09:36:23,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 09:36:23,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2023-12-21 09:36:23,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:36:24,369 INFO L225 Difference]: With dead ends: 294857 [2023-12-21 09:36:24,369 INFO L226 Difference]: Without dead ends: 196573 [2023-12-21 09:36:24,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 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 09:36:24,555 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 6 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 09:36:24,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1657 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 09:36:24,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196573 states. [2023-12-21 09:36:30,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196573 to 196567. [2023-12-21 09:36:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196567 states, 165870 states have (on average 1.61111713992886) internal successors, (267236), 165877 states have internal predecessors, (267236), 30652 states have call successors, (30652), 38 states have call predecessors, (30652), 44 states have return successors, (37216), 30651 states have call predecessors, (37216), 30650 states have call successors, (37216) [2023-12-21 09:36:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196567 states to 196567 states and 335104 transitions. [2023-12-21 09:36:31,945 INFO L78 Accepts]: Start accepts. Automaton has 196567 states and 335104 transitions. Word has length 125 [2023-12-21 09:36:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 09:36:31,946 INFO L495 AbstractCegarLoop]: Abstraction has 196567 states and 335104 transitions. [2023-12-21 09:36:31,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-21 09:36:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 196567 states and 335104 transitions. [2023-12-21 09:36:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-21 09:36:32,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 09:36:32,311 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 09:36:32,316 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 09:36:32,517 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,SelfDestructingSolverStorable23 [2023-12-21 09:36:32,517 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 09:36:32,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 09:36:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash -321214099, now seen corresponding path program 1 times [2023-12-21 09:36:32,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 09:36:32,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476899554] [2023-12-21 09:36:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:36:32,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 09:36:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 09:36:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 09:36:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 09:36:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-21 09:36:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-21 09:36:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 09:36:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 09:36:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 09:36:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 09:36:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 09:36:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 09:36:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 09:36:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 09:36:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-21 09:36:32,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 09:36:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476899554] [2023-12-21 09:36:32,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476899554] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 09:36:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61715102] [2023-12-21 09:36:32,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 09:36:32,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 09:36:32,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 09:36:32,608 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 09:36:32,635 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 09:36:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 09:36:32,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 09:36:32,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 09:36:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 09:36:33,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 09:36:33,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61715102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 09:36:33,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 09:36:33,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2023-12-21 09:36:33,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184977936] [2023-12-21 09:36:33,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 09:36:33,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 09:36:33,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 09:36:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 09:36:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2023-12-21 09:36:33,029 INFO L87 Difference]: Start difference. First operand 196567 states and 335104 transitions. Second operand has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 6 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2023-12-21 09:36:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 09:36:37,763 INFO L93 Difference]: Finished difference Result 197535 states and 336571 transitions. [2023-12-21 09:36:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 09:36:37,764 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 10 states have internal predecessors, (92), 6 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 126 [2023-12-21 09:36:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 09:36:38,563 INFO L225 Difference]: With dead ends: 197535 [2023-12-21 09:36:38,563 INFO L226 Difference]: Without dead ends: 197255 [2023-12-21 09:36:38,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 09:36:38,622 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 959 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 3990 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 09:36:38,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 3990 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 09:36:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197255 states.