/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 23:27:04,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 23:27:04,331 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 23:27:04,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 23:27:04,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 23:27:04,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 23:27:04,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 23:27:04,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 23:27:04,362 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 23:27:04,365 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 23:27:04,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 23:27:04,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 23:27:04,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 23:27:04,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 23:27:04,367 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 23:27:04,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 23:27:04,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 23:27:04,367 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 23:27:04,368 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 23:27:04,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 23:27:04,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 23:27:04,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 23:27:04,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 23:27:04,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 23:27:04,369 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 23:27:04,369 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 23:27:04,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 23:27:04,370 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 23:27:04,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 23:27:04,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 23:27:04,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 23:27:04,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 23:27:04,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:27:04,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 23:27:04,371 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 23:27:04,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 23:27:04,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 23:27:04,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 23:27:04,372 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 23:27:04,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 23:27:04,372 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 23:27:04,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 23:27:04,373 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 23:27:04,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 23:27:04,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 23:27:04,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 23:27:04,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 23:27:04,599 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 23:27:04,607 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 23:27:04,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product12.cil.c [2023-12-19 23:27:05,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 23:27:05,818 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 23:27:05,818 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product12.cil.c [2023-12-19 23:27:05,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80580846/adcab3caf5ae4c3da5f66139fc9f2941/FLAG86780ea52 [2023-12-19 23:27:05,845 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80580846/adcab3caf5ae4c3da5f66139fc9f2941 [2023-12-19 23:27:05,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 23:27:05,847 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 23:27:05,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 23:27:05,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 23:27:05,852 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 23:27:05,853 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:27:05" (1/1) ... [2023-12-19 23:27:05,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e98a6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:05, skipping insertion in model container [2023-12-19 23:27:05,854 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:27:05" (1/1) ... [2023-12-19 23:27:05,907 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 23:27:06,191 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_spec8_product12.cil.c[16969,16982] [2023-12-19 23:27:06,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:27:06,353 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 23:27:06,359 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-12-19 23:27:06,361 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [414] [2023-12-19 23:27:06,361 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [717] [2023-12-19 23:27:06,361 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [752] [2023-12-19 23:27:06,362 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [761] [2023-12-19 23:27:06,362 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [974] [2023-12-19 23:27:06,362 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptAutoResponder_spec.i","") [1386] [2023-12-19 23:27:06,362 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1428] [2023-12-19 23:27:06,362 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1533] [2023-12-19 23:27:06,362 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1765] [2023-12-19 23:27:06,363 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2834] [2023-12-19 23:27:06,392 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_spec8_product12.cil.c[16969,16982] [2023-12-19 23:27:06,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:27:06,464 INFO L206 MainTranslator]: Completed translation [2023-12-19 23:27:06,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06 WrapperNode [2023-12-19 23:27:06,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 23:27:06,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 23:27:06,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 23:27:06,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 23:27:06,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,545 INFO L138 Inliner]: procedures = 123, calls = 177, calls flagged for inlining = 51, calls inlined = 41, statements flattened = 826 [2023-12-19 23:27:06,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 23:27:06,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 23:27:06,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 23:27:06,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 23:27:06,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,592 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,613 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]. [2023-12-19 23:27:06,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,648 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 23:27:06,649 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 23:27:06,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 23:27:06,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 23:27:06,650 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (1/1) ... [2023-12-19 23:27:06,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:27:06,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:27:06,709 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) [2023-12-19 23:27:06,726 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 [2023-12-19 23:27:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-19 23:27:06,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-19 23:27:06,734 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-19 23:27:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-19 23:27:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-19 23:27:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-19 23:27:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-19 23:27:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-19 23:27:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-19 23:27:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-19 23:27:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-19 23:27:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-19 23:27:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-19 23:27:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-19 23:27:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-19 23:27:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-19 23:27:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 23:27:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-19 23:27:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-19 23:27:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-19 23:27:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-19 23:27:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-19 23:27:06,739 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-19 23:27:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-19 23:27:06,739 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-19 23:27:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-19 23:27:06,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-19 23:27:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-19 23:27:06,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-19 23:27:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 23:27:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 23:27:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 23:27:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 23:27:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-19 23:27:06,739 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-19 23:27:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 23:27:06,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 23:27:06,915 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 23:27:06,916 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 23:27:07,396 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 23:27:07,453 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 23:27:07,454 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 23:27:07,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:27:07 BoogieIcfgContainer [2023-12-19 23:27:07,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 23:27:07,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 23:27:07,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 23:27:07,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 23:27:07,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:27:05" (1/3) ... [2023-12-19 23:27:07,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9b1bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:27:07, skipping insertion in model container [2023-12-19 23:27:07,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:27:06" (2/3) ... [2023-12-19 23:27:07,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9b1bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:27:07, skipping insertion in model container [2023-12-19 23:27:07,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:27:07" (3/3) ... [2023-12-19 23:27:07,461 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product12.cil.c [2023-12-19 23:27:07,475 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 23:27:07,475 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 23:27:07,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 23:27:07,551 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;@31613980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 23:27:07,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 23:27:07,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 184 states have (on average 1.6195652173913044) internal successors, (298), 188 states have internal predecessors, (298), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-19 23:27:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 23:27:07,573 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:07,573 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:07,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:07,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1138228022, now seen corresponding path program 1 times [2023-12-19 23:27:07,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:07,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250907557] [2023-12-19 23:27:07,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:07,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:27:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:27:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:27:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 23:27:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 23:27:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 23:27:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:27:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 23:27:08,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250907557] [2023-12-19 23:27:08,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250907557] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:27:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557434728] [2023-12-19 23:27:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:08,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:27:08,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:27:08,170 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) [2023-12-19 23:27:08,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 23:27:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 23:27:08,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:27:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 23:27:08,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:27:08,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557434728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:08,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:27:08,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2023-12-19 23:27:08,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628347775] [2023-12-19 23:27:08,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:08,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 23:27:08,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:08,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 23:27:08,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:27:08,451 INFO L87 Difference]: Start difference. First operand has 240 states, 184 states have (on average 1.6195652173913044) internal successors, (298), 188 states have internal predecessors, (298), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:08,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:08,505 INFO L93 Difference]: Finished difference Result 339 states and 522 transitions. [2023-12-19 23:27:08,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 23:27:08,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2023-12-19 23:27:08,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:08,516 INFO L225 Difference]: With dead ends: 339 [2023-12-19 23:27:08,516 INFO L226 Difference]: Without dead ends: 237 [2023-12-19 23:27:08,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:27:08,524 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:08,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 362 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:27:08,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-19 23:27:08,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-12-19 23:27:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 182 states have (on average 1.598901098901099) internal successors, (291), 185 states have internal predecessors, (291), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 23:27:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 368 transitions. [2023-12-19 23:27:08,565 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 368 transitions. Word has length 80 [2023-12-19 23:27:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:08,566 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 368 transitions. [2023-12-19 23:27:08,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 368 transitions. [2023-12-19 23:27:08,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 23:27:08,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:08,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:08,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 23:27:08,780 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 [2023-12-19 23:27:08,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:08,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1635184356, now seen corresponding path program 1 times [2023-12-19 23:27:08,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:08,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820388632] [2023-12-19 23:27:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:08,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:27:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:27:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:27:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:27:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 23:27:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:27:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:27:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 23:27:09,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:09,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820388632] [2023-12-19 23:27:09,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820388632] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:27:09,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554496987] [2023-12-19 23:27:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:09,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:27:09,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:27:09,049 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) [2023-12-19 23:27:09,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 23:27:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 23:27:09,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:27:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 23:27:09,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:27:09,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554496987] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:09,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:27:09,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-19 23:27:09,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281430102] [2023-12-19 23:27:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:09,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:27:09,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:27:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:27:09,263 INFO L87 Difference]: Start difference. First operand 237 states and 368 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:09,312 INFO L93 Difference]: Finished difference Result 335 states and 509 transitions. [2023-12-19 23:27:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:27:09,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 81 [2023-12-19 23:27:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:09,316 INFO L225 Difference]: With dead ends: 335 [2023-12-19 23:27:09,316 INFO L226 Difference]: Without dead ends: 239 [2023-12-19 23:27:09,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:27:09,318 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 0 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 717 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 [2023-12-19 23:27:09,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 717 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:27:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-19 23:27:09,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-12-19 23:27:09,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 184 states have (on average 1.5923913043478262) internal successors, (293), 187 states have internal predecessors, (293), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-19 23:27:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 370 transitions. [2023-12-19 23:27:09,340 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 370 transitions. Word has length 81 [2023-12-19 23:27:09,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:09,340 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 370 transitions. [2023-12-19 23:27:09,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:09,341 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 370 transitions. [2023-12-19 23:27:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 23:27:09,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:09,343 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] [2023-12-19 23:27:09,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 23:27:09,556 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 [2023-12-19 23:27:09,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:09,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2053980588, now seen corresponding path program 1 times [2023-12-19 23:27:09,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:09,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628131222] [2023-12-19 23:27:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:09,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:27:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:27:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:27:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 23:27:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 23:27:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:27:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:27:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 23:27:09,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:09,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628131222] [2023-12-19 23:27:09,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628131222] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:27:09,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415866384] [2023-12-19 23:27:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:09,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:27:09,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:27:09,697 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) [2023-12-19 23:27:09,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 23:27:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:09,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 23:27:09,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:27:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 23:27:09,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:27:09,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415866384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:09,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:27:09,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-19 23:27:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237066191] [2023-12-19 23:27:09,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:09,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:27:09,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:27:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:27:09,941 INFO L87 Difference]: Start difference. First operand 239 states and 370 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:09,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:09,975 INFO L93 Difference]: Finished difference Result 504 states and 792 transitions. [2023-12-19 23:27:09,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:27:09,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-12-19 23:27:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:09,986 INFO L225 Difference]: With dead ends: 504 [2023-12-19 23:27:09,986 INFO L226 Difference]: Without dead ends: 287 [2023-12-19 23:27:09,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:27:09,990 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 95 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:09,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 687 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:27:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-19 23:27:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 282. [2023-12-19 23:27:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 216 states have (on average 1.6018518518518519) internal successors, (346), 219 states have internal predecessors, (346), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-19 23:27:10,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 445 transitions. [2023-12-19 23:27:10,003 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 445 transitions. Word has length 86 [2023-12-19 23:27:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:10,003 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 445 transitions. [2023-12-19 23:27:10,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 445 transitions. [2023-12-19 23:27:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 23:27:10,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:10,006 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] [2023-12-19 23:27:10,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 23:27:10,216 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 [2023-12-19 23:27:10,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:10,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:10,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1871427568, now seen corresponding path program 1 times [2023-12-19 23:27:10,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:10,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701758227] [2023-12-19 23:27:10,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:10,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:27:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:27:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:27:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 23:27:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 23:27:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:27:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:27:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 23:27:10,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:10,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701758227] [2023-12-19 23:27:10,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701758227] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:27:10,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548785989] [2023-12-19 23:27:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:10,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:27:10,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:27:10,343 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) [2023-12-19 23:27:10,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 23:27:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:10,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 23:27:10,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:27:10,627 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 23:27:10,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:27:10,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548785989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:10,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:27:10,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-19 23:27:10,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272275619] [2023-12-19 23:27:10,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:10,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:27:10,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:10,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:27:10,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:27:10,628 INFO L87 Difference]: Start difference. First operand 282 states and 445 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 23:27:10,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:10,704 INFO L93 Difference]: Finished difference Result 559 states and 884 transitions. [2023-12-19 23:27:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:27:10,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2023-12-19 23:27:10,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:10,707 INFO L225 Difference]: With dead ends: 559 [2023-12-19 23:27:10,707 INFO L226 Difference]: Without dead ends: 284 [2023-12-19 23:27:10,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-19 23:27:10,712 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 8 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:10,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1389 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:27:10,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-19 23:27:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-12-19 23:27:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 217 states have (on average 1.599078341013825) internal successors, (347), 221 states have internal predecessors, (347), 50 states have call successors, (50), 15 states have call predecessors, (50), 16 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2023-12-19 23:27:10,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 448 transitions. [2023-12-19 23:27:10,728 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 448 transitions. Word has length 87 [2023-12-19 23:27:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:10,728 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 448 transitions. [2023-12-19 23:27:10,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 23:27:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 448 transitions. [2023-12-19 23:27:10,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 23:27:10,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:10,729 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:10,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 23:27:10,935 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 [2023-12-19 23:27:10,936 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:10,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash 948161369, now seen corresponding path program 1 times [2023-12-19 23:27:10,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:10,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235850171] [2023-12-19 23:27:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:10,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:27:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-19 23:27:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 23:27:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:27:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:27:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:27:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 23:27:11,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:11,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235850171] [2023-12-19 23:27:11,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235850171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:27:11,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008569374] [2023-12-19 23:27:11,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:11,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:27:11,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:27:11,069 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) [2023-12-19 23:27:11,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 23:27:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 23:27:11,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:27:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-19 23:27:11,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:27:11,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008569374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:11,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:27:11,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-19 23:27:11,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948774758] [2023-12-19 23:27:11,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:11,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:27:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:11,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:27:11,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:27:11,309 INFO L87 Difference]: Start difference. First operand 284 states and 448 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 23:27:11,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:11,364 INFO L93 Difference]: Finished difference Result 561 states and 889 transitions. [2023-12-19 23:27:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:27:11,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2023-12-19 23:27:11,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:11,366 INFO L225 Difference]: With dead ends: 561 [2023-12-19 23:27:11,366 INFO L226 Difference]: Without dead ends: 286 [2023-12-19 23:27:11,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 23:27:11,367 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 8 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:11,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1375 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:27:11,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-19 23:27:11,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2023-12-19 23:27:11,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 218 states have (on average 1.5963302752293578) internal successors, (348), 223 states have internal predecessors, (348), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2023-12-19 23:27:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 454 transitions. [2023-12-19 23:27:11,375 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 454 transitions. Word has length 88 [2023-12-19 23:27:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:11,375 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 454 transitions. [2023-12-19 23:27:11,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 23:27:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 454 transitions. [2023-12-19 23:27:11,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 23:27:11,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:11,377 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] [2023-12-19 23:27:11,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 23:27:11,583 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 [2023-12-19 23:27:11,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:11,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2099251291, now seen corresponding path program 1 times [2023-12-19 23:27:11,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:11,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007077068] [2023-12-19 23:27:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:11,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 23:27:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 23:27:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:27:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:27:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:27:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 23:27:11,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:11,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007077068] [2023-12-19 23:27:11,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007077068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:11,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:11,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 23:27:11,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757675062] [2023-12-19 23:27:11,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:11,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 23:27:11,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:11,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 23:27:11,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:27:11,706 INFO L87 Difference]: Start difference. First operand 286 states and 454 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 23:27:12,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:12,641 INFO L93 Difference]: Finished difference Result 598 states and 956 transitions. [2023-12-19 23:27:12,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:27:12,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2023-12-19 23:27:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:12,643 INFO L225 Difference]: With dead ends: 598 [2023-12-19 23:27:12,643 INFO L226 Difference]: Without dead ends: 331 [2023-12-19 23:27:12,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:27:12,645 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 554 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:12,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 812 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:27:12,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-19 23:27:12,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 286. [2023-12-19 23:27:12,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 218 states have (on average 1.5963302752293578) internal successors, (348), 223 states have internal predecessors, (348), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2023-12-19 23:27:12,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 453 transitions. [2023-12-19 23:27:12,660 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 453 transitions. Word has length 89 [2023-12-19 23:27:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:12,660 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 453 transitions. [2023-12-19 23:27:12,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 23:27:12,660 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 453 transitions. [2023-12-19 23:27:12,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-19 23:27:12,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:12,661 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] [2023-12-19 23:27:12,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 23:27:12,662 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:12,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:12,662 INFO L85 PathProgramCache]: Analyzing trace with hash -964304468, now seen corresponding path program 2 times [2023-12-19 23:27:12,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:12,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793610117] [2023-12-19 23:27:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:12,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:12,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:12,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:12,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:12,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:27:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 23:27:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:12,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 23:27:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:12,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:27:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:12,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:27:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 23:27:12,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:12,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793610117] [2023-12-19 23:27:12,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793610117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:12,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:12,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 23:27:12,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857123020] [2023-12-19 23:27:12,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:12,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 23:27:12,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:12,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 23:27:12,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:27:12,770 INFO L87 Difference]: Start difference. First operand 286 states and 453 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 23:27:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:13,752 INFO L93 Difference]: Finished difference Result 600 states and 959 transitions. [2023-12-19 23:27:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:27:13,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2023-12-19 23:27:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:13,754 INFO L225 Difference]: With dead ends: 600 [2023-12-19 23:27:13,754 INFO L226 Difference]: Without dead ends: 333 [2023-12-19 23:27:13,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:27:13,755 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 550 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:13,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 812 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 23:27:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-19 23:27:13,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 288. [2023-12-19 23:27:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 219 states have (on average 1.5936073059360731) internal successors, (349), 225 states have internal predecessors, (349), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2023-12-19 23:27:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 456 transitions. [2023-12-19 23:27:13,768 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 456 transitions. Word has length 90 [2023-12-19 23:27:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:13,768 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 456 transitions. [2023-12-19 23:27:13,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 23:27:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 456 transitions. [2023-12-19 23:27:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-19 23:27:13,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:13,770 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] [2023-12-19 23:27:13,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 23:27:13,770 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:13,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1261058122, now seen corresponding path program 1 times [2023-12-19 23:27:13,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:13,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116448565] [2023-12-19 23:27:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:13,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:13,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:13,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:13,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 23:27:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:27:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:13,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:27:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:27:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 23:27:13,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:13,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116448565] [2023-12-19 23:27:13,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116448565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:13,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:13,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 23:27:13,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5049074] [2023-12-19 23:27:13,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:13,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 23:27:13,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:13,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 23:27:13,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:27:13,917 INFO L87 Difference]: Start difference. First operand 288 states and 456 transitions. Second operand has 11 states, 10 states have (on average 6.1) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-19 23:27:15,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:15,061 INFO L93 Difference]: Finished difference Result 598 states and 954 transitions. [2023-12-19 23:27:15,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 23:27:15,061 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 91 [2023-12-19 23:27:15,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:15,064 INFO L225 Difference]: With dead ends: 598 [2023-12-19 23:27:15,064 INFO L226 Difference]: Without dead ends: 333 [2023-12-19 23:27:15,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-19 23:27:15,066 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 559 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:15,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1163 Invalid, 2559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 23:27:15,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-19 23:27:15,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 288. [2023-12-19 23:27:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 219 states have (on average 1.5936073059360731) internal successors, (349), 225 states have internal predecessors, (349), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2023-12-19 23:27:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 455 transitions. [2023-12-19 23:27:15,083 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 455 transitions. Word has length 91 [2023-12-19 23:27:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:15,083 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 455 transitions. [2023-12-19 23:27:15,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-19 23:27:15,083 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 455 transitions. [2023-12-19 23:27:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 23:27:15,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:15,084 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] [2023-12-19 23:27:15,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 23:27:15,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:15,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1546423432, now seen corresponding path program 2 times [2023-12-19 23:27:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:15,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78560898] [2023-12-19 23:27:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:15,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:15,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:15,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:15,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:15,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:15,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 23:27:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:15,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:27:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:27:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:27:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 23:27:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:15,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78560898] [2023-12-19 23:27:15,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78560898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:15,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 23:27:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773905294] [2023-12-19 23:27:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:15,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 23:27:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 23:27:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:27:15,224 INFO L87 Difference]: Start difference. First operand 288 states and 455 transitions. Second operand has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-19 23:27:16,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:16,153 INFO L93 Difference]: Finished difference Result 600 states and 960 transitions. [2023-12-19 23:27:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 23:27:16,153 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 92 [2023-12-19 23:27:16,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:16,155 INFO L225 Difference]: With dead ends: 600 [2023-12-19 23:27:16,155 INFO L226 Difference]: Without dead ends: 335 [2023-12-19 23:27:16,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-19 23:27:16,156 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 555 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:16,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1163 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:27:16,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-19 23:27:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 290. [2023-12-19 23:27:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 220 states have (on average 1.5909090909090908) internal successors, (350), 227 states have internal predecessors, (350), 50 states have call successors, (50), 15 states have call predecessors, (50), 19 states have return successors, (61), 49 states have call predecessors, (61), 49 states have call successors, (61) [2023-12-19 23:27:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 461 transitions. [2023-12-19 23:27:16,210 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 461 transitions. Word has length 92 [2023-12-19 23:27:16,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:16,210 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 461 transitions. [2023-12-19 23:27:16,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-19 23:27:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 461 transitions. [2023-12-19 23:27:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-19 23:27:16,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:16,211 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] [2023-12-19 23:27:16,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 23:27:16,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:16,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash 578229647, now seen corresponding path program 1 times [2023-12-19 23:27:16,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:16,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965033246] [2023-12-19 23:27:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:16,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 23:27:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 23:27:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:27:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 23:27:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:16,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:16,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965033246] [2023-12-19 23:27:16,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965033246] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:27:16,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908369001] [2023-12-19 23:27:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:16,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:27:16,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:27:16,305 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) [2023-12-19 23:27:16,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 23:27:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:16,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 23:27:16,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:27:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:16,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:27:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:16,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908369001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:27:16,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:27:16,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-12-19 23:27:16,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562881679] [2023-12-19 23:27:16,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:27:16,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 23:27:16,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:16,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 23:27:16,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:27:16,571 INFO L87 Difference]: Start difference. First operand 290 states and 461 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:27:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:17,415 INFO L93 Difference]: Finished difference Result 741 states and 1245 transitions. [2023-12-19 23:27:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 23:27:17,416 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 93 [2023-12-19 23:27:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:17,419 INFO L225 Difference]: With dead ends: 741 [2023-12-19 23:27:17,419 INFO L226 Difference]: Without dead ends: 645 [2023-12-19 23:27:17,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:27:17,420 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 954 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:17,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1043 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:27:17,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-19 23:27:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 585. [2023-12-19 23:27:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 451 states have (on average 1.6407982261640799) internal successors, (740), 458 states have internal predecessors, (740), 114 states have call successors, (114), 15 states have call predecessors, (114), 19 states have return successors, (135), 113 states have call predecessors, (135), 113 states have call successors, (135) [2023-12-19 23:27:17,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 989 transitions. [2023-12-19 23:27:17,440 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 989 transitions. Word has length 93 [2023-12-19 23:27:17,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:17,441 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 989 transitions. [2023-12-19 23:27:17,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:27:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 989 transitions. [2023-12-19 23:27:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 23:27:17,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:17,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:17,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 23:27:17,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:27:17,651 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:17,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:17,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1196160332, now seen corresponding path program 1 times [2023-12-19 23:27:17,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:17,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110597425] [2023-12-19 23:27:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:17,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:17,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:17,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:17,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:17,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:27:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:17,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:27:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:17,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:27:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:27:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:17,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:17,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110597425] [2023-12-19 23:27:17,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110597425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:17,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:17,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:27:17,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89182885] [2023-12-19 23:27:17,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:17,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:27:17,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:17,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:27:17,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:27:17,795 INFO L87 Difference]: Start difference. First operand 585 states and 989 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:18,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:18,520 INFO L93 Difference]: Finished difference Result 1452 states and 2514 transitions. [2023-12-19 23:27:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:27:18,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2023-12-19 23:27:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:18,526 INFO L225 Difference]: With dead ends: 1452 [2023-12-19 23:27:18,526 INFO L226 Difference]: Without dead ends: 927 [2023-12-19 23:27:18,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:27:18,529 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 637 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:18,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 602 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 23:27:18,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2023-12-19 23:27:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 877. [2023-12-19 23:27:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 679 states have (on average 1.6450662739322532) internal successors, (1117), 686 states have internal predecessors, (1117), 178 states have call successors, (178), 15 states have call predecessors, (178), 19 states have return successors, (209), 177 states have call predecessors, (209), 177 states have call successors, (209) [2023-12-19 23:27:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1504 transitions. [2023-12-19 23:27:18,561 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1504 transitions. Word has length 99 [2023-12-19 23:27:18,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:18,561 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1504 transitions. [2023-12-19 23:27:18,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1504 transitions. [2023-12-19 23:27:18,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-19 23:27:18,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:18,565 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:18,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 23:27:18,566 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:18,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash 472194709, now seen corresponding path program 1 times [2023-12-19 23:27:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:18,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688558065] [2023-12-19 23:27:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:18,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:18,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:18,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:18,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 23:27:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:27:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 23:27:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:27:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:18,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:18,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688558065] [2023-12-19 23:27:18,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688558065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:18,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:18,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:27:18,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544514466] [2023-12-19 23:27:18,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:18,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:27:18,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:18,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:27:18,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:27:18,638 INFO L87 Difference]: Start difference. First operand 877 states and 1504 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:19,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:19,370 INFO L93 Difference]: Finished difference Result 2149 states and 3741 transitions. [2023-12-19 23:27:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:27:19,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2023-12-19 23:27:19,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:19,376 INFO L225 Difference]: With dead ends: 2149 [2023-12-19 23:27:19,376 INFO L226 Difference]: Without dead ends: 1382 [2023-12-19 23:27:19,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:27:19,378 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 635 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:19,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 571 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 23:27:19,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2023-12-19 23:27:19,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1332. [2023-12-19 23:27:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1039 states have (on average 1.6467757459095285) internal successors, (1711), 1046 states have internal predecessors, (1711), 273 states have call successors, (273), 15 states have call predecessors, (273), 19 states have return successors, (304), 272 states have call predecessors, (304), 272 states have call successors, (304) [2023-12-19 23:27:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 2288 transitions. [2023-12-19 23:27:19,417 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 2288 transitions. Word has length 100 [2023-12-19 23:27:19,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:19,418 INFO L495 AbstractCegarLoop]: Abstraction has 1332 states and 2288 transitions. [2023-12-19 23:27:19,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 2288 transitions. [2023-12-19 23:27:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 23:27:19,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:19,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:19,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 23:27:19,422 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:19,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1426509646, now seen corresponding path program 1 times [2023-12-19 23:27:19,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:19,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137765892] [2023-12-19 23:27:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:19,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:19,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:19,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:19,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:27:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:19,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:27:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:19,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:27:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:19,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:27:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:19,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:19,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137765892] [2023-12-19 23:27:19,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137765892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:19,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:19,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:27:19,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571399081] [2023-12-19 23:27:19,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:19,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:27:19,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:19,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:27:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:27:19,496 INFO L87 Difference]: Start difference. First operand 1332 states and 2288 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:20,173 INFO L93 Difference]: Finished difference Result 3167 states and 5553 transitions. [2023-12-19 23:27:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:27:20,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2023-12-19 23:27:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:20,184 INFO L225 Difference]: With dead ends: 3167 [2023-12-19 23:27:20,184 INFO L226 Difference]: Without dead ends: 2065 [2023-12-19 23:27:20,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:27:20,189 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 633 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:20,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 571 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 23:27:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2023-12-19 23:27:20,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 2015. [2023-12-19 23:27:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1599 states have (on average 1.6491557223264541) internal successors, (2637), 1606 states have internal predecessors, (2637), 396 states have call successors, (396), 15 states have call predecessors, (396), 19 states have return successors, (443), 395 states have call predecessors, (443), 395 states have call successors, (443) [2023-12-19 23:27:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3476 transitions. [2023-12-19 23:27:20,297 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3476 transitions. Word has length 101 [2023-12-19 23:27:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:20,297 INFO L495 AbstractCegarLoop]: Abstraction has 2015 states and 3476 transitions. [2023-12-19 23:27:20,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3476 transitions. [2023-12-19 23:27:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 23:27:20,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:20,305 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:20,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 23:27:20,305 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:20,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1134806570, now seen corresponding path program 1 times [2023-12-19 23:27:20,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:20,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838886123] [2023-12-19 23:27:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:20,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:20,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:20,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:20,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:20,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:20,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:27:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:20,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:27:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:27:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:20,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:27:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:20,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:20,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838886123] [2023-12-19 23:27:20,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838886123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:20,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:20,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:27:20,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498639452] [2023-12-19 23:27:20,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:20,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:27:20,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:20,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:27:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:27:20,365 INFO L87 Difference]: Start difference. First operand 2015 states and 3476 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:21,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:21,033 INFO L93 Difference]: Finished difference Result 4737 states and 8358 transitions. [2023-12-19 23:27:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:27:21,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2023-12-19 23:27:21,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:21,046 INFO L225 Difference]: With dead ends: 4737 [2023-12-19 23:27:21,046 INFO L226 Difference]: Without dead ends: 3149 [2023-12-19 23:27:21,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:27:21,051 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 631 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:21,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 570 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 23:27:21,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2023-12-19 23:27:21,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3099. [2023-12-19 23:27:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2504 states have (on average 1.65055910543131) internal successors, (4133), 2511 states have internal predecessors, (4133), 575 states have call successors, (575), 15 states have call predecessors, (575), 19 states have return successors, (648), 574 states have call predecessors, (648), 574 states have call successors, (648) [2023-12-19 23:27:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 5356 transitions. [2023-12-19 23:27:21,194 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 5356 transitions. Word has length 102 [2023-12-19 23:27:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:21,194 INFO L495 AbstractCegarLoop]: Abstraction has 3099 states and 5356 transitions. [2023-12-19 23:27:21,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 5356 transitions. [2023-12-19 23:27:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 23:27:21,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:21,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:21,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 23:27:21,201 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:21,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:21,201 INFO L85 PathProgramCache]: Analyzing trace with hash -966883734, now seen corresponding path program 1 times [2023-12-19 23:27:21,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:21,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046376375] [2023-12-19 23:27:21,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:21,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:21,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:21,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:21,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:21,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:21,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:21,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 23:27:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:21,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:27:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:21,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:27:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:27:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:21,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:21,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046376375] [2023-12-19 23:27:21,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046376375] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:21,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:21,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:27:21,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241118383] [2023-12-19 23:27:21,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:21,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:27:21,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:27:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:27:21,259 INFO L87 Difference]: Start difference. First operand 3099 states and 5356 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:21,949 INFO L93 Difference]: Finished difference Result 7568 states and 13370 transitions. [2023-12-19 23:27:21,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:27:21,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2023-12-19 23:27:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:21,983 INFO L225 Difference]: With dead ends: 7568 [2023-12-19 23:27:21,984 INFO L226 Difference]: Without dead ends: 5119 [2023-12-19 23:27:21,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:27:21,993 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 629 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:21,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 592 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 23:27:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2023-12-19 23:27:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 5069. [2023-12-19 23:27:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 4098 states have (on average 1.6408003904343582) internal successors, (6724), 4105 states have internal predecessors, (6724), 951 states have call successors, (951), 15 states have call predecessors, (951), 19 states have return successors, (1068), 950 states have call predecessors, (1068), 950 states have call successors, (1068) [2023-12-19 23:27:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 8743 transitions. [2023-12-19 23:27:22,225 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 8743 transitions. Word has length 103 [2023-12-19 23:27:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:22,226 INFO L495 AbstractCegarLoop]: Abstraction has 5069 states and 8743 transitions. [2023-12-19 23:27:22,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 8743 transitions. [2023-12-19 23:27:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 23:27:22,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:22,235 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:22,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 23:27:22,235 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:22,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:22,236 INFO L85 PathProgramCache]: Analyzing trace with hash 709374650, now seen corresponding path program 1 times [2023-12-19 23:27:22,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:22,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103063513] [2023-12-19 23:27:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:22,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:22,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:22,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:22,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:22,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:22,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:22,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:22,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:27:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:22,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:27:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:22,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:27:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 23:27:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:22,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:22,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103063513] [2023-12-19 23:27:22,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103063513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:22,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:22,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:27:22,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127162614] [2023-12-19 23:27:22,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:22,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:27:22,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:22,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:27:22,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:27:22,300 INFO L87 Difference]: Start difference. First operand 5069 states and 8743 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:23,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:23,078 INFO L93 Difference]: Finished difference Result 12549 states and 22118 transitions. [2023-12-19 23:27:23,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:27:23,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2023-12-19 23:27:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:23,126 INFO L225 Difference]: With dead ends: 12549 [2023-12-19 23:27:23,126 INFO L226 Difference]: Without dead ends: 8496 [2023-12-19 23:27:23,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:27:23,139 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 627 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:23,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 577 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 23:27:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8496 states. [2023-12-19 23:27:23,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8496 to 8446. [2023-12-19 23:27:23,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8446 states, 6869 states have (on average 1.6373562381714952) internal successors, (11247), 6876 states have internal predecessors, (11247), 1557 states have call successors, (1557), 15 states have call predecessors, (1557), 19 states have return successors, (1752), 1556 states have call predecessors, (1752), 1556 states have call successors, (1752) [2023-12-19 23:27:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8446 states to 8446 states and 14556 transitions. [2023-12-19 23:27:23,426 INFO L78 Accepts]: Start accepts. Automaton has 8446 states and 14556 transitions. Word has length 104 [2023-12-19 23:27:23,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:23,426 INFO L495 AbstractCegarLoop]: Abstraction has 8446 states and 14556 transitions. [2023-12-19 23:27:23,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 8446 states and 14556 transitions. [2023-12-19 23:27:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 23:27:23,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:23,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:23,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 23:27:23,438 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:23,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:23,439 INFO L85 PathProgramCache]: Analyzing trace with hash 467239500, now seen corresponding path program 1 times [2023-12-19 23:27:23,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:23,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246422421] [2023-12-19 23:27:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:23,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:23,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:23,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:27:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:27:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:23,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:27:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 23:27:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:23,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:23,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246422421] [2023-12-19 23:27:23,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246422421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:23,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:23,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:27:23,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264683990] [2023-12-19 23:27:23,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:23,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:27:23,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:23,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:27:23,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:27:23,504 INFO L87 Difference]: Start difference. First operand 8446 states and 14556 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:24,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:24,382 INFO L93 Difference]: Finished difference Result 21901 states and 38517 transitions. [2023-12-19 23:27:24,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:27:24,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2023-12-19 23:27:24,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:24,426 INFO L225 Difference]: With dead ends: 21901 [2023-12-19 23:27:24,427 INFO L226 Difference]: Without dead ends: 14880 [2023-12-19 23:27:24,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:27:24,449 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 625 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:24,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 595 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 23:27:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14880 states. [2023-12-19 23:27:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14880 to 14830. [2023-12-19 23:27:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14830 states, 12050 states have (on average 1.6268879668049792) internal successors, (19604), 12057 states have internal predecessors, (19604), 2760 states have call successors, (2760), 15 states have call predecessors, (2760), 19 states have return successors, (3099), 2759 states have call predecessors, (3099), 2759 states have call successors, (3099) [2023-12-19 23:27:24,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14830 states to 14830 states and 25463 transitions. [2023-12-19 23:27:24,965 INFO L78 Accepts]: Start accepts. Automaton has 14830 states and 25463 transitions. Word has length 105 [2023-12-19 23:27:24,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:24,965 INFO L495 AbstractCegarLoop]: Abstraction has 14830 states and 25463 transitions. [2023-12-19 23:27:24,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:24,965 INFO L276 IsEmpty]: Start isEmpty. Operand 14830 states and 25463 transitions. [2023-12-19 23:27:24,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-19 23:27:24,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:24,981 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:24,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 23:27:24,981 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:24,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:24,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1424727653, now seen corresponding path program 1 times [2023-12-19 23:27:24,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:24,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496612219] [2023-12-19 23:27:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:24,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:25,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:25,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:25,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:25,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:27:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:27:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:25,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:27:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:27:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:25,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:25,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496612219] [2023-12-19 23:27:25,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496612219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:25,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:25,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:27:25,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799689034] [2023-12-19 23:27:25,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:25,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:27:25,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:25,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:27:25,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:27:25,046 INFO L87 Difference]: Start difference. First operand 14830 states and 25463 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:26,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:26,117 INFO L93 Difference]: Finished difference Result 39260 states and 68903 transitions. [2023-12-19 23:27:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:27:26,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2023-12-19 23:27:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:26,204 INFO L225 Difference]: With dead ends: 39260 [2023-12-19 23:27:26,204 INFO L226 Difference]: Without dead ends: 26447 [2023-12-19 23:27:26,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:27:26,237 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 623 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:26,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 572 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 23:27:26,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26447 states. [2023-12-19 23:27:27,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26447 to 26397. [2023-12-19 23:27:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26397 states, 21578 states have (on average 1.6224395217351006) internal successors, (35009), 21585 states have internal predecessors, (35009), 4799 states have call successors, (4799), 15 states have call predecessors, (4799), 19 states have return successors, (5412), 4798 states have call predecessors, (5412), 4798 states have call successors, (5412) [2023-12-19 23:27:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26397 states to 26397 states and 45220 transitions. [2023-12-19 23:27:27,164 INFO L78 Accepts]: Start accepts. Automaton has 26397 states and 45220 transitions. Word has length 106 [2023-12-19 23:27:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:27,164 INFO L495 AbstractCegarLoop]: Abstraction has 26397 states and 45220 transitions. [2023-12-19 23:27:27,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:27,164 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states and 45220 transitions. [2023-12-19 23:27:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-19 23:27:27,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:27,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:27,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 23:27:27,182 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:27,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1064178034, now seen corresponding path program 1 times [2023-12-19 23:27:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:27,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233757066] [2023-12-19 23:27:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:27,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:27,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:27,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:27,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:27:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:27,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:27:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:27,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:27:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:27,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:27:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233757066] [2023-12-19 23:27:27,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233757066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:27,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:27,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:27:27,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041734675] [2023-12-19 23:27:27,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:27,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:27:27,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:27,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:27:27,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:27:27,248 INFO L87 Difference]: Start difference. First operand 26397 states and 45220 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:28,868 INFO L93 Difference]: Finished difference Result 71872 states and 125327 transitions. [2023-12-19 23:27:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:27:28,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2023-12-19 23:27:28,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:28,993 INFO L225 Difference]: With dead ends: 71872 [2023-12-19 23:27:28,993 INFO L226 Difference]: Without dead ends: 48207 [2023-12-19 23:27:29,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:27:29,035 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 621 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:29,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 580 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 23:27:29,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48207 states. [2023-12-19 23:27:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48207 to 48157. [2023-12-19 23:27:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48157 states, 39623 states have (on average 1.6167629911919845) internal successors, (64061), 39630 states have internal predecessors, (64061), 8514 states have call successors, (8514), 15 states have call predecessors, (8514), 19 states have return successors, (9659), 8513 states have call predecessors, (9659), 8513 states have call successors, (9659) [2023-12-19 23:27:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48157 states to 48157 states and 82234 transitions. [2023-12-19 23:27:30,715 INFO L78 Accepts]: Start accepts. Automaton has 48157 states and 82234 transitions. Word has length 107 [2023-12-19 23:27:30,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:30,715 INFO L495 AbstractCegarLoop]: Abstraction has 48157 states and 82234 transitions. [2023-12-19 23:27:30,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:30,715 INFO L276 IsEmpty]: Start isEmpty. Operand 48157 states and 82234 transitions. [2023-12-19 23:27:30,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 23:27:30,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:30,734 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:30,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 23:27:30,734 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:30,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash 163589723, now seen corresponding path program 1 times [2023-12-19 23:27:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:30,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081577337] [2023-12-19 23:27:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:30,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:30,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:30,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:30,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:30,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:27:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:30,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:27:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:30,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:27:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:27:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:30,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:30,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081577337] [2023-12-19 23:27:30,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081577337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:30,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:30,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:27:30,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171261114] [2023-12-19 23:27:30,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:30,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:27:30,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:27:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:27:30,795 INFO L87 Difference]: Start difference. First operand 48157 states and 82234 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:32,988 INFO L93 Difference]: Finished difference Result 89591 states and 156691 transitions. [2023-12-19 23:27:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:27:32,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2023-12-19 23:27:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:33,297 INFO L225 Difference]: With dead ends: 89591 [2023-12-19 23:27:33,298 INFO L226 Difference]: Without dead ends: 89495 [2023-12-19 23:27:33,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:27:33,352 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 619 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:33,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 571 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 23:27:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89495 states. [2023-12-19 23:27:35,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89495 to 89445. [2023-12-19 23:27:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89445 states, 74112 states have (on average 1.6096043825561313) internal successors, (119291), 74119 states have internal predecessors, (119291), 15313 states have call successors, (15313), 15 states have call predecessors, (15313), 19 states have return successors, (17504), 15312 states have call predecessors, (17504), 15312 states have call successors, (17504) [2023-12-19 23:27:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89445 states to 89445 states and 152108 transitions. [2023-12-19 23:27:36,275 INFO L78 Accepts]: Start accepts. Automaton has 89445 states and 152108 transitions. Word has length 108 [2023-12-19 23:27:36,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:36,275 INFO L495 AbstractCegarLoop]: Abstraction has 89445 states and 152108 transitions. [2023-12-19 23:27:36,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:27:36,276 INFO L276 IsEmpty]: Start isEmpty. Operand 89445 states and 152108 transitions. [2023-12-19 23:27:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 23:27:36,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:36,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:36,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 23:27:36,294 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:36,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:36,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1964824365, now seen corresponding path program 1 times [2023-12-19 23:27:36,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:36,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142946209] [2023-12-19 23:27:36,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:36,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:36,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:36,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:36,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:36,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:27:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:36,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:27:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:36,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:27:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 23:27:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:36,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:36,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142946209] [2023-12-19 23:27:36,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142946209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:36,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:36,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 23:27:36,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536231957] [2023-12-19 23:27:36,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:36,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 23:27:36,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:36,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 23:27:36,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:27:36,496 INFO L87 Difference]: Start difference. First operand 89445 states and 152108 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-19 23:27:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:42,542 INFO L93 Difference]: Finished difference Result 178338 states and 315273 transitions. [2023-12-19 23:27:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-19 23:27:42,543 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 109 [2023-12-19 23:27:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:43,247 INFO L225 Difference]: With dead ends: 178338 [2023-12-19 23:27:43,248 INFO L226 Difference]: Without dead ends: 178249 [2023-12-19 23:27:43,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=475, Invalid=1505, Unknown=0, NotChecked=0, Total=1980 [2023-12-19 23:27:43,311 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 2126 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 4093 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 4729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 4093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:43,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2126 Valid, 1944 Invalid, 4729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 4093 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 23:27:43,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178249 states. [2023-12-19 23:27:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178249 to 178092. [2023-12-19 23:27:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178092 states, 147639 states have (on average 1.6106381105263514) internal successors, (237793), 147541 states have internal predecessors, (237793), 30409 states have call successors, (30409), 38 states have call predecessors, (30409), 43 states have return successors, (38058), 30518 states have call predecessors, (38058), 30406 states have call successors, (38058) [2023-12-19 23:27:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178092 states to 178092 states and 306260 transitions. [2023-12-19 23:27:50,404 INFO L78 Accepts]: Start accepts. Automaton has 178092 states and 306260 transitions. Word has length 109 [2023-12-19 23:27:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:27:50,405 INFO L495 AbstractCegarLoop]: Abstraction has 178092 states and 306260 transitions. [2023-12-19 23:27:50,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-19 23:27:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 178092 states and 306260 transitions. [2023-12-19 23:27:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 23:27:50,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:27:50,461 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:27:50,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 23:27:50,462 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:27:50,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:27:50,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1173308945, now seen corresponding path program 1 times [2023-12-19 23:27:50,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:27:50,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783137097] [2023-12-19 23:27:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:27:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:27:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:27:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:27:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:27:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:27:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:50,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:27:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:50,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:27:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:27:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:27:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:27:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:27:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:27:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:27:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:27:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783137097] [2023-12-19 23:27:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783137097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:27:50,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:27:50,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:27:50,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360560963] [2023-12-19 23:27:50,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:27:50,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:27:50,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:27:50,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:27:50,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:27:50,551 INFO L87 Difference]: Start difference. First operand 178092 states and 306260 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 23:27:54,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:27:54,753 INFO L93 Difference]: Finished difference Result 178276 states and 313030 transitions. [2023-12-19 23:27:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 23:27:54,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2023-12-19 23:27:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:27:55,464 INFO L225 Difference]: With dead ends: 178276 [2023-12-19 23:27:55,464 INFO L226 Difference]: Without dead ends: 178098 [2023-12-19 23:27:55,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-19 23:27:55,538 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 568 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:27:55,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 703 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:27:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178098 states. [2023-12-19 23:28:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178098 to 178008. [2023-12-19 23:28:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178008 states, 147575 states have (on average 1.6106522107403016) internal successors, (237692), 147474 states have internal predecessors, (237692), 30396 states have call successors, (30396), 32 states have call predecessors, (30396), 36 states have return successors, (38045), 30505 states have call predecessors, (38045), 30394 states have call successors, (38045) [2023-12-19 23:28:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178008 states to 178008 states and 306133 transitions. [2023-12-19 23:28:02,254 INFO L78 Accepts]: Start accepts. Automaton has 178008 states and 306133 transitions. Word has length 110 [2023-12-19 23:28:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:28:02,255 INFO L495 AbstractCegarLoop]: Abstraction has 178008 states and 306133 transitions. [2023-12-19 23:28:02,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-19 23:28:02,255 INFO L276 IsEmpty]: Start isEmpty. Operand 178008 states and 306133 transitions. [2023-12-19 23:28:02,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 23:28:02,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:28:02,308 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:28:02,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 23:28:02,309 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:28:02,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:28:02,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1798302400, now seen corresponding path program 1 times [2023-12-19 23:28:02,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:28:02,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618813901] [2023-12-19 23:28:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:28:02,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:28:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:28:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:02,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:28:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:28:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:02,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:28:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:28:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:02,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:28:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:28:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:28:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:02,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:28:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:28:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:28:02,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:28:02,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618813901] [2023-12-19 23:28:02,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618813901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:28:02,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:28:02,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 23:28:02,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936038536] [2023-12-19 23:28:02,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:28:02,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 23:28:02,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:28:02,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 23:28:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:28:02,510 INFO L87 Difference]: Start difference. First operand 178008 states and 306133 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-19 23:28:07,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:28:07,293 INFO L93 Difference]: Finished difference Result 178428 states and 313270 transitions. [2023-12-19 23:28:07,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 23:28:07,294 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 110 [2023-12-19 23:28:07,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:28:07,932 INFO L225 Difference]: With dead ends: 178428 [2023-12-19 23:28:07,932 INFO L226 Difference]: Without dead ends: 178159 [2023-12-19 23:28:08,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2023-12-19 23:28:08,003 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1180 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 23:28:08,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 1021 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 23:28:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178159 states. [2023-12-19 23:28:13,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178159 to 178051. [2023-12-19 23:28:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178051 states, 147608 states have (on average 1.6105969866131917) internal successors, (237737), 147507 states have internal predecessors, (237737), 30406 states have call successors, (30406), 34 states have call predecessors, (30406), 36 states have return successors, (38056), 30515 states have call predecessors, (38056), 30404 states have call successors, (38056) [2023-12-19 23:28:14,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178051 states to 178051 states and 306199 transitions. [2023-12-19 23:28:14,954 INFO L78 Accepts]: Start accepts. Automaton has 178051 states and 306199 transitions. Word has length 110 [2023-12-19 23:28:14,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:28:14,954 INFO L495 AbstractCegarLoop]: Abstraction has 178051 states and 306199 transitions. [2023-12-19 23:28:14,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-19 23:28:14,954 INFO L276 IsEmpty]: Start isEmpty. Operand 178051 states and 306199 transitions. [2023-12-19 23:28:14,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 23:28:14,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:28:14,983 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:28:14,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 23:28:14,983 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:28:14,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:28:14,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1257367832, now seen corresponding path program 1 times [2023-12-19 23:28:14,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:28:14,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582458622] [2023-12-19 23:28:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:28:14,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:28:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:28:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:15,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:28:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:15,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:28:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:28:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:15,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:28:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:15,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:28:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:15,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:28:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:15,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:28:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:15,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:28:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:28:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:28:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:28:15,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:28:15,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582458622] [2023-12-19 23:28:15,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582458622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:28:15,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:28:15,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:28:15,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892671000] [2023-12-19 23:28:15,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:28:15,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:28:15,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:28:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:28:15,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:28:15,120 INFO L87 Difference]: Start difference. First operand 178051 states and 306199 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-19 23:28:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:28:21,670 INFO L93 Difference]: Finished difference Result 266895 states and 477867 transitions. [2023-12-19 23:28:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 23:28:21,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2023-12-19 23:28:21,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:28:22,843 INFO L225 Difference]: With dead ends: 266895 [2023-12-19 23:28:22,843 INFO L226 Difference]: Without dead ends: 266788 [2023-12-19 23:28:22,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-12-19 23:28:22,936 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1284 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:28:22,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 920 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:28:23,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266788 states. [2023-12-19 23:28:32,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266788 to 266627. [2023-12-19 23:28:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266627 states, 221080 states have (on average 1.6109462637959109) internal successors, (356148), 220872 states have internal predecessors, (356148), 45494 states have call successors, (45494), 50 states have call predecessors, (45494), 52 states have return successors, (63958), 45713 states have call predecessors, (63958), 45491 states have call successors, (63958)