/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_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 22:52:05,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 22:52:05,148 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 22:52:05,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 22:52:05,151 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 22:52:05,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 22:52:05,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 22:52:05,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 22:52:05,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 22:52:05,187 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 22:52:05,187 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 22:52:05,188 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 22:52:05,188 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 22:52:05,189 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 22:52:05,189 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 22:52:05,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 22:52:05,190 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 22:52:05,190 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 22:52:05,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 22:52:05,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 22:52:05,191 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 22:52:05,192 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 22:52:05,192 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 22:52:05,192 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 22:52:05,192 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 22:52:05,192 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 22:52:05,193 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 22:52:05,193 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 22:52:05,193 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 22:52:05,193 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 22:52:05,194 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 22:52:05,194 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 22:52:05,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:52:05,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 22:52:05,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 22:52:05,195 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 22:52:05,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 22:52:05,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 22:52:05,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 22:52:05,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 22:52:05,195 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 22:52:05,195 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 22:52:05,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 22:52:05,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 22:52:05,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 22:52:05,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 22:52:05,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 22:52:05,400 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 22:52:05,401 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 22:52:05,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product22.cil.c [2023-12-15 22:52:06,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 22:52:06,732 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 22:52:06,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product22.cil.c [2023-12-15 22:52:06,750 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acc2b9585/b9d671f0db3b424d9413db70148c8222/FLAGcc575cc68 [2023-12-15 22:52:06,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acc2b9585/b9d671f0db3b424d9413db70148c8222 [2023-12-15 22:52:06,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 22:52:06,765 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 22:52:06,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 22:52:06,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 22:52:06,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 22:52:06,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:52:06" (1/1) ... [2023-12-15 22:52:06,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24450af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:06, skipping insertion in model container [2023-12-15 22:52:06,786 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:52:06" (1/1) ... [2023-12-15 22:52:06,870 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 22:52:07,181 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_product22.cil.c[29813,29826] [2023-12-15 22:52:07,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:52:07,305 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 22:52:07,311 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-12-15 22:52:07,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [375] [2023-12-15 22:52:07,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [787] [2023-12-15 22:52:07,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1006] [2023-12-15 22:52:07,312 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1372] [2023-12-15 22:52:07,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1381] [2023-12-15 22:52:07,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1398] [2023-12-15 22:52:07,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1704] [2023-12-15 22:52:07,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1739] [2023-12-15 22:52:07,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2804] [2023-12-15 22:52:07,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptAutoResponder_spec.i","") [2907] [2023-12-15 22:52:07,353 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_product22.cil.c[29813,29826] [2023-12-15 22:52:07,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 22:52:07,402 INFO L206 MainTranslator]: Completed translation [2023-12-15 22:52:07,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07 WrapperNode [2023-12-15 22:52:07,402 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 22:52:07,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 22:52:07,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 22:52:07,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 22:52:07,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,459 INFO L138 Inliner]: procedures = 129, calls = 193, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 1016 [2023-12-15 22:52:07,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 22:52:07,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 22:52:07,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 22:52:07,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 22:52:07,468 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,473 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,491 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]. [2023-12-15 22:52:07,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 22:52:07,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 22:52:07,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 22:52:07,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 22:52:07,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (1/1) ... [2023-12-15 22:52:07,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 22:52:07,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:52:07,541 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) [2023-12-15 22:52:07,563 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 [2023-12-15 22:52:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-15 22:52:07,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-15 22:52:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-15 22:52:07,579 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-15 22:52:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-15 22:52:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-15 22:52:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-15 22:52:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-15 22:52:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-15 22:52:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-15 22:52:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-15 22:52:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-15 22:52:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-15 22:52:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-15 22:52:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-15 22:52:07,580 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-15 22:52:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-12-15 22:52:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-12-15 22:52:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-15 22:52:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-15 22:52:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 22:52:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-15 22:52:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-15 22:52:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-15 22:52:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-15 22:52:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-15 22:52:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-15 22:52:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-15 22:52:07,581 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-15 22:52:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-15 22:52:07,582 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-15 22:52:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-15 22:52:07,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-15 22:52:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-15 22:52:07,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-15 22:52:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 22:52:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 22:52:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 22:52:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-15 22:52:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-15 22:52:07,582 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-15 22:52:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 22:52:07,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 22:52:07,777 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 22:52:07,779 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 22:52:08,289 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 22:52:08,322 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 22:52:08,322 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 22:52:08,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:52:08 BoogieIcfgContainer [2023-12-15 22:52:08,323 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 22:52:08,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 22:52:08,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 22:52:08,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 22:52:08,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:52:06" (1/3) ... [2023-12-15 22:52:08,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1455329d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:52:08, skipping insertion in model container [2023-12-15 22:52:08,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:07" (2/3) ... [2023-12-15 22:52:08,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1455329d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:52:08, skipping insertion in model container [2023-12-15 22:52:08,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:52:08" (3/3) ... [2023-12-15 22:52:08,328 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product22.cil.c [2023-12-15 22:52:08,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 22:52:08,340 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 22:52:08,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 22:52:08,376 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;@346c5266, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 22:52:08,377 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 22:52:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 294 states, 224 states have (on average 1.59375) internal successors, (357), 228 states have internal predecessors, (357), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-15 22:52:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-15 22:52:08,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:08,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:08,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:08,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash -115803781, now seen corresponding path program 1 times [2023-12-15 22:52:08,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:08,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755724263] [2023-12-15 22:52:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:08,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 22:52:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 22:52:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 22:52:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 22:52:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-15 22:52:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 22:52:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 22:52:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-15 22:52:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-15 22:52:08,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:08,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755724263] [2023-12-15 22:52:08,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755724263] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:52:08,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533931261] [2023-12-15 22:52:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:08,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:52:08,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:52:08,892 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) [2023-12-15 22:52:08,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 22:52:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 22:52:09,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:52:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-15 22:52:09,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:52:09,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533931261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:09,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:52:09,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-15 22:52:09,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078615598] [2023-12-15 22:52:09,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:09,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 22:52:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:09,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 22:52:09,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:52:09,222 INFO L87 Difference]: Start difference. First operand has 294 states, 224 states have (on average 1.59375) internal successors, (357), 228 states have internal predecessors, (357), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:09,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:09,291 INFO L93 Difference]: Finished difference Result 439 states and 670 transitions. [2023-12-15 22:52:09,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 22:52:09,293 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2023-12-15 22:52:09,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:09,302 INFO L225 Difference]: With dead ends: 439 [2023-12-15 22:52:09,303 INFO L226 Difference]: Without dead ends: 291 [2023-12-15 22:52:09,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:52:09,310 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 436 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 [2023-12-15 22:52:09,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 436 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:52:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-15 22:52:09,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-12-15 22:52:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 222 states have (on average 1.5765765765765767) internal successors, (350), 225 states have internal predecessors, (350), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-15 22:52:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 449 transitions. [2023-12-15 22:52:09,388 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 449 transitions. Word has length 83 [2023-12-15 22:52:09,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:09,389 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 449 transitions. [2023-12-15 22:52:09,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 449 transitions. [2023-12-15 22:52:09,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-15 22:52:09,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:09,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:09,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 22:52:09,599 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 [2023-12-15 22:52:09,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:09,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:09,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1914984650, now seen corresponding path program 1 times [2023-12-15 22:52:09,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:09,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489414592] [2023-12-15 22:52:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:09,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 22:52:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 22:52:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 22:52:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 22:52:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-15 22:52:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 22:52:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 22:52:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-15 22:52:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-15 22:52:09,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:09,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489414592] [2023-12-15 22:52:09,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489414592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:52:09,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236605941] [2023-12-15 22:52:09,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:09,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:52:09,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:52:09,775 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) [2023-12-15 22:52:09,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 22:52:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 22:52:10,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:52:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-15 22:52:10,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:52:10,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236605941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:10,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:52:10,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-15 22:52:10,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334601000] [2023-12-15 22:52:10,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:10,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 22:52:10,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:10,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 22:52:10,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:52:10,115 INFO L87 Difference]: Start difference. First operand 291 states and 449 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:10,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:10,157 INFO L93 Difference]: Finished difference Result 435 states and 657 transitions. [2023-12-15 22:52:10,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 22:52:10,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84 [2023-12-15 22:52:10,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:10,160 INFO L225 Difference]: With dead ends: 435 [2023-12-15 22:52:10,160 INFO L226 Difference]: Without dead ends: 293 [2023-12-15 22:52:10,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:52:10,162 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:10,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 865 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:52:10,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-15 22:52:10,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2023-12-15 22:52:10,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 224 states have (on average 1.5714285714285714) internal successors, (352), 227 states have internal predecessors, (352), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-15 22:52:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 451 transitions. [2023-12-15 22:52:10,207 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 451 transitions. Word has length 84 [2023-12-15 22:52:10,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:10,207 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 451 transitions. [2023-12-15 22:52:10,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:10,210 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 451 transitions. [2023-12-15 22:52:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 22:52:10,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:10,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:10,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 22:52:10,425 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 [2023-12-15 22:52:10,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:10,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2011099750, now seen corresponding path program 1 times [2023-12-15 22:52:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:10,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880680715] [2023-12-15 22:52:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:10,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 22:52:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 22:52:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 22:52:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 22:52:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 22:52:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 22:52:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-15 22:52:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-15 22:52:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-15 22:52:10,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:10,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880680715] [2023-12-15 22:52:10,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880680715] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:52:10,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467588770] [2023-12-15 22:52:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:10,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:52:10,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:52:10,652 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) [2023-12-15 22:52:10,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 22:52:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:52:11,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:52:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-15 22:52:11,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:52:11,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467588770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:11,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:52:11,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-15 22:52:11,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408583188] [2023-12-15 22:52:11,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:11,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 22:52:11,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:11,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 22:52:11,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:52:11,054 INFO L87 Difference]: Start difference. First operand 293 states and 451 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:11,109 INFO L93 Difference]: Finished difference Result 620 states and 968 transitions. [2023-12-15 22:52:11,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 22:52:11,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 91 [2023-12-15 22:52:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:11,112 INFO L225 Difference]: With dead ends: 620 [2023-12-15 22:52:11,112 INFO L226 Difference]: Without dead ends: 349 [2023-12-15 22:52:11,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-15 22:52:11,114 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 109 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:11,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 837 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 22:52:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-15 22:52:11,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 344. [2023-12-15 22:52:11,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 264 states have (on average 1.5871212121212122) internal successors, (419), 267 states have internal predecessors, (419), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 22:52:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 540 transitions. [2023-12-15 22:52:11,128 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 540 transitions. Word has length 91 [2023-12-15 22:52:11,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:11,128 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 540 transitions. [2023-12-15 22:52:11,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 540 transitions. [2023-12-15 22:52:11,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-15 22:52:11,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:11,131 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:11,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 22:52:11,337 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 [2023-12-15 22:52:11,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:11,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:11,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2040698275, now seen corresponding path program 1 times [2023-12-15 22:52:11,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:11,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260918825] [2023-12-15 22:52:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 22:52:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-15 22:52:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-15 22:52:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-15 22:52:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 22:52:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-15 22:52:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-15 22:52:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-15 22:52:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-15 22:52:11,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:11,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260918825] [2023-12-15 22:52:11,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260918825] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:52:11,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18137219] [2023-12-15 22:52:11,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:11,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:52:11,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:52:11,550 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) [2023-12-15 22:52:11,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 22:52:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:11,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 22:52:11,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:52:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 22:52:11,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:52:11,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18137219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:11,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:52:11,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-15 22:52:11,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16453168] [2023-12-15 22:52:11,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:11,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 22:52:11,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:11,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 22:52:11,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:52:11,860 INFO L87 Difference]: Start difference. First operand 344 states and 540 transitions. Second operand has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 22:52:11,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:11,942 INFO L93 Difference]: Finished difference Result 683 states and 1074 transitions. [2023-12-15 22:52:11,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:52:11,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2023-12-15 22:52:11,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:11,944 INFO L225 Difference]: With dead ends: 683 [2023-12-15 22:52:11,944 INFO L226 Difference]: Without dead ends: 346 [2023-12-15 22:52:11,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:52:11,946 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 8 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:11,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1685 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:52:11,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-15 22:52:11,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2023-12-15 22:52:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 265 states have (on average 1.5849056603773586) internal successors, (420), 269 states have internal predecessors, (420), 61 states have call successors, (61), 18 states have call predecessors, (61), 19 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2023-12-15 22:52:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 543 transitions. [2023-12-15 22:52:11,958 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 543 transitions. Word has length 92 [2023-12-15 22:52:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:11,958 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 543 transitions. [2023-12-15 22:52:11,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 22:52:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 543 transitions. [2023-12-15 22:52:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-15 22:52:11,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:11,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:11,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 22:52:12,167 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 [2023-12-15 22:52:12,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:12,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:12,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1385331741, now seen corresponding path program 1 times [2023-12-15 22:52:12,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:12,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654052274] [2023-12-15 22:52:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:12,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 22:52:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-15 22:52:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-15 22:52:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 22:52:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:52:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 22:52:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 22:52:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-15 22:52:12,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654052274] [2023-12-15 22:52:12,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654052274] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:52:12,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189284706] [2023-12-15 22:52:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:12,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:52:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:52:12,407 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) [2023-12-15 22:52:12,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 22:52:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:12,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 22:52:12,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:52:12,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 22:52:12,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 22:52:12,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189284706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:12,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 22:52:12,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-15 22:52:12,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395965782] [2023-12-15 22:52:12,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:12,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 22:52:12,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:12,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 22:52:12,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-15 22:52:12,764 INFO L87 Difference]: Start difference. First operand 346 states and 543 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 22:52:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:12,850 INFO L93 Difference]: Finished difference Result 685 states and 1079 transitions. [2023-12-15 22:52:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 22:52:12,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2023-12-15 22:52:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:12,852 INFO L225 Difference]: With dead ends: 685 [2023-12-15 22:52:12,852 INFO L226 Difference]: Without dead ends: 348 [2023-12-15 22:52:12,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-15 22:52:12,854 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 8 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:12,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1671 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 22:52:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-15 22:52:12,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2023-12-15 22:52:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 266 states have (on average 1.5827067669172932) internal successors, (421), 271 states have internal predecessors, (421), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2023-12-15 22:52:12,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 549 transitions. [2023-12-15 22:52:12,881 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 549 transitions. Word has length 93 [2023-12-15 22:52:12,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:12,882 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 549 transitions. [2023-12-15 22:52:12,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 22:52:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 549 transitions. [2023-12-15 22:52:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 22:52:12,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:12,883 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:12,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 22:52:13,100 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 [2023-12-15 22:52:13,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:13,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:13,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1524590723, now seen corresponding path program 1 times [2023-12-15 22:52:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495675738] [2023-12-15 22:52:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:13,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 22:52:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 22:52:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 22:52:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 22:52:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 22:52:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-15 22:52:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-15 22:52:13,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:13,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495675738] [2023-12-15 22:52:13,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495675738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:13,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:13,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 22:52:13,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186479364] [2023-12-15 22:52:13,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:13,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 22:52:13,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:13,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 22:52:13,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:52:13,241 INFO L87 Difference]: Start difference. First operand 348 states and 549 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 22:52:15,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:15,106 INFO L93 Difference]: Finished difference Result 824 states and 1315 transitions. [2023-12-15 22:52:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 22:52:15,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 94 [2023-12-15 22:52:15,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:15,111 INFO L225 Difference]: With dead ends: 824 [2023-12-15 22:52:15,111 INFO L226 Difference]: Without dead ends: 495 [2023-12-15 22:52:15,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 22:52:15,113 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 950 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:15,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1011 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 22:52:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-12-15 22:52:15,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 348. [2023-12-15 22:52:15,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 266 states have (on average 1.5827067669172932) internal successors, (421), 271 states have internal predecessors, (421), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2023-12-15 22:52:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 548 transitions. [2023-12-15 22:52:15,135 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 548 transitions. Word has length 94 [2023-12-15 22:52:15,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:15,135 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 548 transitions. [2023-12-15 22:52:15,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 22:52:15,135 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 548 transitions. [2023-12-15 22:52:15,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-15 22:52:15,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:15,137 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:15,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 22:52:15,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:15,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1093561953, now seen corresponding path program 2 times [2023-12-15 22:52:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012361806] [2023-12-15 22:52:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:15,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 22:52:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-15 22:52:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-15 22:52:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-15 22:52:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 22:52:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 22:52:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-15 22:52:15,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:15,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012361806] [2023-12-15 22:52:15,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012361806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:15,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 22:52:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771141145] [2023-12-15 22:52:15,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:15,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 22:52:15,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:15,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 22:52:15,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:52:15,271 INFO L87 Difference]: Start difference. First operand 348 states and 548 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 22:52:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:17,003 INFO L93 Difference]: Finished difference Result 826 states and 1318 transitions. [2023-12-15 22:52:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 22:52:17,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 95 [2023-12-15 22:52:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:17,007 INFO L225 Difference]: With dead ends: 826 [2023-12-15 22:52:17,007 INFO L226 Difference]: Without dead ends: 497 [2023-12-15 22:52:17,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 22:52:17,009 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 945 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:17,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 1011 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 22:52:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-15 22:52:17,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 350. [2023-12-15 22:52:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 267 states have (on average 1.5805243445692885) internal successors, (422), 273 states have internal predecessors, (422), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2023-12-15 22:52:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 551 transitions. [2023-12-15 22:52:17,028 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 551 transitions. Word has length 95 [2023-12-15 22:52:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:17,029 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 551 transitions. [2023-12-15 22:52:17,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 22:52:17,029 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 551 transitions. [2023-12-15 22:52:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-15 22:52:17,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:17,030 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:17,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 22:52:17,030 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:17,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1340536534, now seen corresponding path program 1 times [2023-12-15 22:52:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:17,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049361198] [2023-12-15 22:52:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:17,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 22:52:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 22:52:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 22:52:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 22:52:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 22:52:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-15 22:52:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:17,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049361198] [2023-12-15 22:52:17,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049361198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:17,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:17,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 22:52:17,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841429040] [2023-12-15 22:52:17,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 22:52:17,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 22:52:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 22:52:17,166 INFO L87 Difference]: Start difference. First operand 350 states and 551 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 22:52:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:18,694 INFO L93 Difference]: Finished difference Result 826 states and 1317 transitions. [2023-12-15 22:52:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 22:52:18,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2023-12-15 22:52:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:18,718 INFO L225 Difference]: With dead ends: 826 [2023-12-15 22:52:18,718 INFO L226 Difference]: Without dead ends: 497 [2023-12-15 22:52:18,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-12-15 22:52:18,721 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 948 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:18,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1011 Invalid, 2734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 22:52:18,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-15 22:52:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 350. [2023-12-15 22:52:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 267 states have (on average 1.5805243445692885) internal successors, (422), 273 states have internal predecessors, (422), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2023-12-15 22:52:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 551 transitions. [2023-12-15 22:52:18,752 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 551 transitions. Word has length 96 [2023-12-15 22:52:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:18,752 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 551 transitions. [2023-12-15 22:52:18,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-15 22:52:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 551 transitions. [2023-12-15 22:52:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-15 22:52:18,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:18,753 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:18,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 22:52:18,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:18,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:18,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1394929432, now seen corresponding path program 1 times [2023-12-15 22:52:18,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:18,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689005148] [2023-12-15 22:52:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:18,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-15 22:52:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 22:52:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 22:52:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 22:52:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 22:52:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-15 22:52:18,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:18,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689005148] [2023-12-15 22:52:18,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689005148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:18,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:18,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 22:52:18,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602550872] [2023-12-15 22:52:18,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:18,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 22:52:18,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:18,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 22:52:18,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:52:18,903 INFO L87 Difference]: Start difference. First operand 350 states and 551 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-15 22:52:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:20,894 INFO L93 Difference]: Finished difference Result 824 states and 1312 transitions. [2023-12-15 22:52:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 22:52:20,895 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 96 [2023-12-15 22:52:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:20,897 INFO L225 Difference]: With dead ends: 824 [2023-12-15 22:52:20,897 INFO L226 Difference]: Without dead ends: 497 [2023-12-15 22:52:20,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-15 22:52:20,901 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 955 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 4004 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 4326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 4004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:20,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1398 Invalid, 4326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 4004 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 22:52:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-15 22:52:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 350. [2023-12-15 22:52:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 267 states have (on average 1.5805243445692885) internal successors, (422), 273 states have internal predecessors, (422), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2023-12-15 22:52:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 550 transitions. [2023-12-15 22:52:20,933 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 550 transitions. Word has length 96 [2023-12-15 22:52:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:20,933 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 550 transitions. [2023-12-15 22:52:20,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-15 22:52:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 550 transitions. [2023-12-15 22:52:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-15 22:52:20,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:20,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:20,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 22:52:20,950 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:20,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1373088696, now seen corresponding path program 2 times [2023-12-15 22:52:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:20,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322196701] [2023-12-15 22:52:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:20,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-15 22:52:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 22:52:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 22:52:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-15 22:52:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 22:52:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-15 22:52:21,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:21,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322196701] [2023-12-15 22:52:21,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322196701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:21,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:21,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 22:52:21,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449717485] [2023-12-15 22:52:21,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:21,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 22:52:21,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:21,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 22:52:21,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-15 22:52:21,145 INFO L87 Difference]: Start difference. First operand 350 states and 550 transitions. Second operand has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-15 22:52:22,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:22,787 INFO L93 Difference]: Finished difference Result 826 states and 1318 transitions. [2023-12-15 22:52:22,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 22:52:22,788 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 97 [2023-12-15 22:52:22,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:22,790 INFO L225 Difference]: With dead ends: 826 [2023-12-15 22:52:22,790 INFO L226 Difference]: Without dead ends: 499 [2023-12-15 22:52:22,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-15 22:52:22,792 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 950 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 4359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:22,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1398 Invalid, 4359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 22:52:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-12-15 22:52:22,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 352. [2023-12-15 22:52:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 268 states have (on average 1.578358208955224) internal successors, (423), 275 states have internal predecessors, (423), 61 states have call successors, (61), 18 states have call predecessors, (61), 22 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2023-12-15 22:52:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 556 transitions. [2023-12-15 22:52:22,827 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 556 transitions. Word has length 97 [2023-12-15 22:52:22,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:22,827 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 556 transitions. [2023-12-15 22:52:22,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-12-15 22:52:22,827 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 556 transitions. [2023-12-15 22:52:22,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-15 22:52:22,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:22,829 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:22,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 22:52:22,829 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:22,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1949501619, now seen corresponding path program 1 times [2023-12-15 22:52:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:22,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851804245] [2023-12-15 22:52:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:22,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:22,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-15 22:52:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 22:52:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 22:52:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-15 22:52:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-15 22:52:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-15 22:52:23,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:23,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851804245] [2023-12-15 22:52:23,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851804245] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 22:52:23,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193266362] [2023-12-15 22:52:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:23,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:52:23,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 22:52:23,082 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) [2023-12-15 22:52:23,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 22:52:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:23,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 22:52:23,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 22:52:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:23,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 22:52:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:23,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193266362] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 22:52:23,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 22:52:23,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-12-15 22:52:23,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558919164] [2023-12-15 22:52:23,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 22:52:23,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-15 22:52:23,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:23,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-15 22:52:23,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-15 22:52:23,446 INFO L87 Difference]: Start difference. First operand 352 states and 556 transitions. Second operand has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-15 22:52:25,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:25,273 INFO L93 Difference]: Finished difference Result 1175 states and 1964 transitions. [2023-12-15 22:52:25,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 22:52:25,274 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 98 [2023-12-15 22:52:25,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:25,278 INFO L225 Difference]: With dead ends: 1175 [2023-12-15 22:52:25,279 INFO L226 Difference]: Without dead ends: 849 [2023-12-15 22:52:25,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-12-15 22:52:25,283 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 2064 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 4400 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 5057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 4400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:25,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2081 Valid, 1588 Invalid, 5057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 4400 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 22:52:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-12-15 22:52:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 687. [2023-12-15 22:52:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 539 states have (on average 1.6252319109461966) internal successors, (876), 546 states have internal predecessors, (876), 125 states have call successors, (125), 18 states have call predecessors, (125), 22 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2023-12-15 22:52:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1147 transitions. [2023-12-15 22:52:25,345 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1147 transitions. Word has length 98 [2023-12-15 22:52:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:25,358 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 1147 transitions. [2023-12-15 22:52:25,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.642857142857143) internal successors, (107), 11 states have internal predecessors, (107), 4 states have call successors, (27), 6 states have call predecessors, (27), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-15 22:52:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1147 transitions. [2023-12-15 22:52:25,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-15 22:52:25,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:25,361 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] [2023-12-15 22:52:25,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 22:52:25,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 22:52:25,568 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:25,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash -998170075, now seen corresponding path program 1 times [2023-12-15 22:52:25,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:25,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366489722] [2023-12-15 22:52:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:25,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 22:52:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 22:52:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 22:52:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 22:52:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-15 22:52:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:25,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:25,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366489722] [2023-12-15 22:52:25,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366489722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:25,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:25,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:52:25,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48500538] [2023-12-15 22:52:25,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:25,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:52:25,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:25,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:52:25,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:52:25,692 INFO L87 Difference]: Start difference. First operand 687 states and 1147 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:26,870 INFO L93 Difference]: Finished difference Result 1770 states and 3023 transitions. [2023-12-15 22:52:26,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:52:26,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2023-12-15 22:52:26,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:26,875 INFO L225 Difference]: With dead ends: 1770 [2023-12-15 22:52:26,876 INFO L226 Difference]: Without dead ends: 1151 [2023-12-15 22:52:26,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:52:26,878 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 1045 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:26,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 781 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 22:52:26,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2023-12-15 22:52:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 999. [2023-12-15 22:52:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 787 states have (on average 1.636594663278272) internal successors, (1288), 794 states have internal predecessors, (1288), 189 states have call successors, (189), 18 states have call predecessors, (189), 22 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2023-12-15 22:52:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1697 transitions. [2023-12-15 22:52:26,911 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1697 transitions. Word has length 102 [2023-12-15 22:52:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:26,911 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1697 transitions. [2023-12-15 22:52:26,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1697 transitions. [2023-12-15 22:52:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-15 22:52:26,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:26,914 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] [2023-12-15 22:52:26,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 22:52:26,914 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:26,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:26,914 INFO L85 PathProgramCache]: Analyzing trace with hash 255496831, now seen corresponding path program 1 times [2023-12-15 22:52:26,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:26,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796171768] [2023-12-15 22:52:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:26,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-15 22:52:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-15 22:52:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-15 22:52:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-15 22:52:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-15 22:52:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:26,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:26,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796171768] [2023-12-15 22:52:26,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796171768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:26,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:26,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:52:26,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184010595] [2023-12-15 22:52:26,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:26,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:52:26,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:26,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:52:26,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:52:26,971 INFO L87 Difference]: Start difference. First operand 999 states and 1697 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:28,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:28,264 INFO L93 Difference]: Finished difference Result 2539 states and 4371 transitions. [2023-12-15 22:52:28,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:52:28,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2023-12-15 22:52:28,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:28,271 INFO L225 Difference]: With dead ends: 2539 [2023-12-15 22:52:28,271 INFO L226 Difference]: Without dead ends: 1658 [2023-12-15 22:52:28,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:52:28,274 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1043 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:28,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 745 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 22:52:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2023-12-15 22:52:28,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1506. [2023-12-15 22:52:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1199 states have (on average 1.6413678065054211) internal successors, (1968), 1206 states have internal predecessors, (1968), 284 states have call successors, (284), 18 states have call predecessors, (284), 22 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2023-12-15 22:52:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2567 transitions. [2023-12-15 22:52:28,322 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2567 transitions. Word has length 103 [2023-12-15 22:52:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:28,322 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2567 transitions. [2023-12-15 22:52:28,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2567 transitions. [2023-12-15 22:52:28,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-15 22:52:28,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:28,326 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] [2023-12-15 22:52:28,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 22:52:28,327 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:28,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1342643625, now seen corresponding path program 1 times [2023-12-15 22:52:28,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:28,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418886801] [2023-12-15 22:52:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:28,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 22:52:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 22:52:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-15 22:52:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 22:52:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-15 22:52:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:28,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:28,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418886801] [2023-12-15 22:52:28,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418886801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:28,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:28,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:52:28,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899746180] [2023-12-15 22:52:28,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:28,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:52:28,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:28,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:52:28,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:52:28,389 INFO L87 Difference]: Start difference. First operand 1506 states and 2567 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:29,597 INFO L93 Difference]: Finished difference Result 3685 states and 6396 transitions. [2023-12-15 22:52:29,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:52:29,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2023-12-15 22:52:29,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:29,620 INFO L225 Difference]: With dead ends: 3685 [2023-12-15 22:52:29,620 INFO L226 Difference]: Without dead ends: 2425 [2023-12-15 22:52:29,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:52:29,624 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1041 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:29,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 740 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 22:52:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2023-12-15 22:52:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2273. [2023-12-15 22:52:29,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 1843 states have (on average 1.6456863809007054) internal successors, (3033), 1850 states have internal predecessors, (3033), 407 states have call successors, (407), 18 states have call predecessors, (407), 22 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2023-12-15 22:52:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 3894 transitions. [2023-12-15 22:52:29,717 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 3894 transitions. Word has length 104 [2023-12-15 22:52:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:29,717 INFO L495 AbstractCegarLoop]: Abstraction has 2273 states and 3894 transitions. [2023-12-15 22:52:29,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 3894 transitions. [2023-12-15 22:52:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-15 22:52:29,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:29,723 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] [2023-12-15 22:52:29,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 22:52:29,723 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:29,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:29,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1723594306, now seen corresponding path program 1 times [2023-12-15 22:52:29,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:29,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709511983] [2023-12-15 22:52:29,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:29,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-15 22:52:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 22:52:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-15 22:52:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-15 22:52:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 22:52:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:29,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:29,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709511983] [2023-12-15 22:52:29,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709511983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:29,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:29,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:52:29,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112314205] [2023-12-15 22:52:29,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:29,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:52:29,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:29,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:52:29,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:52:29,797 INFO L87 Difference]: Start difference. First operand 2273 states and 3894 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:31,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:31,049 INFO L93 Difference]: Finished difference Result 5467 states and 9554 transitions. [2023-12-15 22:52:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:52:31,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2023-12-15 22:52:31,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:31,065 INFO L225 Difference]: With dead ends: 5467 [2023-12-15 22:52:31,065 INFO L226 Difference]: Without dead ends: 3649 [2023-12-15 22:52:31,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:52:31,072 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1039 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:31,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 737 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 22:52:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2023-12-15 22:52:31,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 3497. [2023-12-15 22:52:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3497 states, 2888 states have (on average 1.6485457063711912) internal successors, (4761), 2895 states have internal predecessors, (4761), 586 states have call successors, (586), 18 states have call predecessors, (586), 22 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2023-12-15 22:52:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 6006 transitions. [2023-12-15 22:52:31,237 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 6006 transitions. Word has length 105 [2023-12-15 22:52:31,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:31,237 INFO L495 AbstractCegarLoop]: Abstraction has 3497 states and 6006 transitions. [2023-12-15 22:52:31,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 6006 transitions. [2023-12-15 22:52:31,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-15 22:52:31,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:31,243 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] [2023-12-15 22:52:31,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 22:52:31,243 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:31,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash 148792219, now seen corresponding path program 1 times [2023-12-15 22:52:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:31,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232623764] [2023-12-15 22:52:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:31,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-15 22:52:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 22:52:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-15 22:52:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-15 22:52:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-15 22:52:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:31,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:31,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232623764] [2023-12-15 22:52:31,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232623764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:31,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:31,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:52:31,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811267923] [2023-12-15 22:52:31,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:31,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:52:31,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:31,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:52:31,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:52:31,315 INFO L87 Difference]: Start difference. First operand 3497 states and 6006 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:32,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:32,828 INFO L93 Difference]: Finished difference Result 8446 states and 14794 transitions. [2023-12-15 22:52:32,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:52:32,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2023-12-15 22:52:32,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:32,850 INFO L225 Difference]: With dead ends: 8446 [2023-12-15 22:52:32,851 INFO L226 Difference]: Without dead ends: 5707 [2023-12-15 22:52:32,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:52:32,859 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1037 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:32,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 755 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 22:52:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2023-12-15 22:52:33,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5555. [2023-12-15 22:52:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5555 states, 4570 states have (on average 1.637636761487965) internal successors, (7484), 4577 states have internal predecessors, (7484), 962 states have call successors, (962), 18 states have call predecessors, (962), 22 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2023-12-15 22:52:33,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5555 states to 5555 states and 9525 transitions. [2023-12-15 22:52:33,059 INFO L78 Accepts]: Start accepts. Automaton has 5555 states and 9525 transitions. Word has length 106 [2023-12-15 22:52:33,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:33,059 INFO L495 AbstractCegarLoop]: Abstraction has 5555 states and 9525 transitions. [2023-12-15 22:52:33,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:33,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5555 states and 9525 transitions. [2023-12-15 22:52:33,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-15 22:52:33,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:33,085 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] [2023-12-15 22:52:33,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 22:52:33,085 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:33,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:33,086 INFO L85 PathProgramCache]: Analyzing trace with hash 305697914, now seen corresponding path program 1 times [2023-12-15 22:52:33,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:33,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732267597] [2023-12-15 22:52:33,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:33,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 22:52:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-15 22:52:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 22:52:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 22:52:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-15 22:52:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:33,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732267597] [2023-12-15 22:52:33,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732267597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:33,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:33,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:52:33,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961269448] [2023-12-15 22:52:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:33,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:52:33,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:33,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:52:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:52:33,185 INFO L87 Difference]: Start difference. First operand 5555 states and 9525 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:34,508 INFO L93 Difference]: Finished difference Result 13807 states and 24151 transitions. [2023-12-15 22:52:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:52:34,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2023-12-15 22:52:34,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:34,570 INFO L225 Difference]: With dead ends: 13807 [2023-12-15 22:52:34,570 INFO L226 Difference]: Without dead ends: 9396 [2023-12-15 22:52:34,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:52:34,590 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1035 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:34,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 750 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 22:52:34,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9396 states. [2023-12-15 22:52:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9396 to 9244. [2023-12-15 22:52:34,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9244 states, 7653 states have (on average 1.6351757480726512) internal successors, (12514), 7660 states have internal predecessors, (12514), 1568 states have call successors, (1568), 18 states have call predecessors, (1568), 22 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2023-12-15 22:52:34,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9244 states to 9244 states and 15845 transitions. [2023-12-15 22:52:34,882 INFO L78 Accepts]: Start accepts. Automaton has 9244 states and 15845 transitions. Word has length 107 [2023-12-15 22:52:34,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:34,882 INFO L495 AbstractCegarLoop]: Abstraction has 9244 states and 15845 transitions. [2023-12-15 22:52:34,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 9244 states and 15845 transitions. [2023-12-15 22:52:34,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-15 22:52:34,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:34,894 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] [2023-12-15 22:52:34,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 22:52:34,894 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:34,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash 878869869, now seen corresponding path program 1 times [2023-12-15 22:52:34,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:34,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061100818] [2023-12-15 22:52:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:34,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-15 22:52:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-15 22:52:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-15 22:52:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-15 22:52:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-15 22:52:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061100818] [2023-12-15 22:52:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061100818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:34,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:34,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:52:34,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8534679] [2023-12-15 22:52:34,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:34,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:52:34,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:34,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:52:34,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:52:34,998 INFO L87 Difference]: Start difference. First operand 9244 states and 15845 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:36,534 INFO L93 Difference]: Finished difference Result 23999 states and 41915 transitions. [2023-12-15 22:52:36,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:52:36,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2023-12-15 22:52:36,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:36,581 INFO L225 Difference]: With dead ends: 23999 [2023-12-15 22:52:36,582 INFO L226 Difference]: Without dead ends: 16356 [2023-12-15 22:52:36,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:52:36,603 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1033 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:36,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 785 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 22:52:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16356 states. [2023-12-15 22:52:37,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16356 to 16204. [2023-12-15 22:52:37,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16204 states, 13410 states have (on average 1.6261744966442953) internal successors, (21807), 13417 states have internal predecessors, (21807), 2771 states have call successors, (2771), 18 states have call predecessors, (2771), 22 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2023-12-15 22:52:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16204 states to 16204 states and 27688 transitions. [2023-12-15 22:52:37,107 INFO L78 Accepts]: Start accepts. Automaton has 16204 states and 27688 transitions. Word has length 108 [2023-12-15 22:52:37,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:37,108 INFO L495 AbstractCegarLoop]: Abstraction has 16204 states and 27688 transitions. [2023-12-15 22:52:37,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:37,108 INFO L276 IsEmpty]: Start isEmpty. Operand 16204 states and 27688 transitions. [2023-12-15 22:52:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-15 22:52:37,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:37,123 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] [2023-12-15 22:52:37,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 22:52:37,124 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:37,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:37,124 INFO L85 PathProgramCache]: Analyzing trace with hash 153298585, now seen corresponding path program 1 times [2023-12-15 22:52:37,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:37,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969509435] [2023-12-15 22:52:37,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:37,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 22:52:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-15 22:52:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 22:52:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-15 22:52:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 22:52:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:37,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:37,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969509435] [2023-12-15 22:52:37,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969509435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:37,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:37,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:52:37,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348460759] [2023-12-15 22:52:37,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:37,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:52:37,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:37,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:52:37,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:52:37,244 INFO L87 Difference]: Start difference. First operand 16204 states and 27688 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:38,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:38,819 INFO L93 Difference]: Finished difference Result 42974 states and 74927 transitions. [2023-12-15 22:52:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:52:38,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2023-12-15 22:52:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:38,915 INFO L225 Difference]: With dead ends: 42974 [2023-12-15 22:52:38,915 INFO L226 Difference]: Without dead ends: 29019 [2023-12-15 22:52:38,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:52:38,945 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1031 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:38,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 741 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 22:52:38,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29019 states. [2023-12-15 22:52:39,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29019 to 28867. [2023-12-15 22:52:39,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28867 states, 24034 states have (on average 1.6224099192810186) internal successors, (38993), 24041 states have internal predecessors, (38993), 4810 states have call successors, (4810), 18 states have call predecessors, (4810), 22 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2023-12-15 22:52:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28867 states to 28867 states and 49226 transitions. [2023-12-15 22:52:39,839 INFO L78 Accepts]: Start accepts. Automaton has 28867 states and 49226 transitions. Word has length 109 [2023-12-15 22:52:39,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:39,840 INFO L495 AbstractCegarLoop]: Abstraction has 28867 states and 49226 transitions. [2023-12-15 22:52:39,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 28867 states and 49226 transitions. [2023-12-15 22:52:39,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-15 22:52:39,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:39,855 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] [2023-12-15 22:52:39,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 22:52:39,855 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:39,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:39,855 INFO L85 PathProgramCache]: Analyzing trace with hash -52400821, now seen corresponding path program 1 times [2023-12-15 22:52:39,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:39,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956310215] [2023-12-15 22:52:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:39,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 22:52:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-15 22:52:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-15 22:52:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-15 22:52:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 22:52:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:40,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:40,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956310215] [2023-12-15 22:52:40,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956310215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:40,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:40,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:52:40,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776743484] [2023-12-15 22:52:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:40,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:52:40,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:40,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:52:40,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:52:40,082 INFO L87 Difference]: Start difference. First operand 28867 states and 49226 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:42,292 INFO L93 Difference]: Finished difference Result 78746 states and 136486 transitions. [2023-12-15 22:52:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:52:42,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2023-12-15 22:52:42,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:42,477 INFO L225 Difference]: With dead ends: 78746 [2023-12-15 22:52:42,477 INFO L226 Difference]: Without dead ends: 52907 [2023-12-15 22:52:42,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:52:42,539 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1029 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:42,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 755 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 22:52:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52907 states. [2023-12-15 22:52:44,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52907 to 52755. [2023-12-15 22:52:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52755 states, 44207 states have (on average 1.61745877349741) internal successors, (71503), 44214 states have internal predecessors, (71503), 8525 states have call successors, (8525), 18 states have call predecessors, (8525), 22 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2023-12-15 22:52:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52755 states to 52755 states and 89698 transitions. [2023-12-15 22:52:44,413 INFO L78 Accepts]: Start accepts. Automaton has 52755 states and 89698 transitions. Word has length 110 [2023-12-15 22:52:44,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:44,413 INFO L495 AbstractCegarLoop]: Abstraction has 52755 states and 89698 transitions. [2023-12-15 22:52:44,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:44,414 INFO L276 IsEmpty]: Start isEmpty. Operand 52755 states and 89698 transitions. [2023-12-15 22:52:44,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 22:52:44,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:44,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:44,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 22:52:44,432 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:44,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash -861490567, now seen corresponding path program 1 times [2023-12-15 22:52:44,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:44,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412289482] [2023-12-15 22:52:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:44,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 22:52:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-15 22:52:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-15 22:52:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-15 22:52:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-15 22:52:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:44,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:44,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412289482] [2023-12-15 22:52:44,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412289482] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:44,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:44,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 22:52:44,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130445972] [2023-12-15 22:52:44,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:44,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 22:52:44,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:44,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 22:52:44,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 22:52:44,502 INFO L87 Difference]: Start difference. First operand 52755 states and 89698 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:52:47,962 INFO L93 Difference]: Finished difference Result 98521 states and 171191 transitions. [2023-12-15 22:52:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 22:52:47,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2023-12-15 22:52:47,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:52:48,590 INFO L225 Difference]: With dead ends: 98521 [2023-12-15 22:52:48,590 INFO L226 Difference]: Without dead ends: 98379 [2023-12-15 22:52:48,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 22:52:48,621 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1027 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 22:52:48,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 738 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 22:52:48,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98379 states. [2023-12-15 22:52:51,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98379 to 98227. [2023-12-15 22:52:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98227 states, 82880 states have (on average 1.6111486486486486) internal successors, (133532), 82887 states have internal predecessors, (133532), 15324 states have call successors, (15324), 18 states have call predecessors, (15324), 22 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2023-12-15 22:52:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98227 states to 98227 states and 166371 transitions. [2023-12-15 22:52:52,617 INFO L78 Accepts]: Start accepts. Automaton has 98227 states and 166371 transitions. Word has length 111 [2023-12-15 22:52:52,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 22:52:52,617 INFO L495 AbstractCegarLoop]: Abstraction has 98227 states and 166371 transitions. [2023-12-15 22:52:52,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-15 22:52:52,618 INFO L276 IsEmpty]: Start isEmpty. Operand 98227 states and 166371 transitions. [2023-12-15 22:52:52,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 22:52:52,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 22:52:52,638 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:52:52,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 22:52:52,638 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 22:52:52,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 22:52:52,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1145786284, now seen corresponding path program 1 times [2023-12-15 22:52:52,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 22:52:52,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106970723] [2023-12-15 22:52:52,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 22:52:52,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 22:52:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 22:52:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 22:52:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 22:52:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-15 22:52:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 22:52:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 22:52:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-15 22:52:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-15 22:52:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-15 22:52:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 22:52:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-15 22:52:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 22:52:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 22:52:53,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 22:52:53,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106970723] [2023-12-15 22:52:53,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106970723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 22:52:53,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 22:52:53,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-15 22:52:53,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67516919] [2023-12-15 22:52:53,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 22:52:53,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 22:52:53,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 22:52:53,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 22:52:53,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-15 22:52:53,197 INFO L87 Difference]: Start difference. First operand 98227 states and 166371 transitions. Second operand has 16 states, 15 states have (on average 5.0) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-15 22:53:01,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 22:53:01,001 INFO L93 Difference]: Finished difference Result 196173 states and 344262 transitions. [2023-12-15 22:53:01,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-15 22:53:01,001 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.0) internal successors, (75), 10 states have internal predecessors, (75), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 112 [2023-12-15 22:53:01,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 22:53:02,211 INFO L225 Difference]: With dead ends: 196173 [2023-12-15 22:53:02,212 INFO L226 Difference]: Without dead ends: 196036 [2023-12-15 22:53:02,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=698, Invalid=2842, Unknown=0, NotChecked=0, Total=3540 [2023-12-15 22:53:02,292 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 3310 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 6372 mSolverCounterSat, 1062 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3322 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 7434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1062 IncrementalHoareTripleChecker+Valid, 6372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 22:53:02,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3322 Valid, 2209 Invalid, 7434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1062 Valid, 6372 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 22:53:02,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196036 states. Received shutdown request... [2023-12-15 22:53:04,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 22:53:04,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 22:53:04,374 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 22:53:04,376 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:53:04,378 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 22:53:04,379 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 22:53:04,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:53:04 BoogieIcfgContainer [2023-12-15 22:53:04,382 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 22:53:04,382 INFO L158 Benchmark]: Toolchain (without parser) took 57616.87ms. Allocated memory was 289.4MB in the beginning and 6.1GB in the end (delta: 5.8GB). Free memory was 246.2MB in the beginning and 5.0GB in the end (delta: -4.7GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-15 22:53:04,383 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 202.4MB. Free memory was 154.4MB in the beginning and 154.3MB in the end (delta: 141.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 22:53:04,383 INFO L158 Benchmark]: CACSL2BoogieTranslator took 636.38ms. Allocated memory is still 289.4MB. Free memory was 245.8MB in the beginning and 204.3MB in the end (delta: 41.5MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2023-12-15 22:53:04,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.32ms. Allocated memory is still 289.4MB. Free memory was 204.3MB in the beginning and 198.6MB in the end (delta: 5.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 22:53:04,384 INFO L158 Benchmark]: Boogie Preprocessor took 56.27ms. Allocated memory is still 289.4MB. Free memory was 198.6MB in the beginning and 191.7MB in the end (delta: 6.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-15 22:53:04,384 INFO L158 Benchmark]: RCFGBuilder took 805.25ms. Allocated memory is still 289.4MB. Free memory was 191.7MB in the beginning and 199.1MB in the end (delta: -7.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-15 22:53:04,384 INFO L158 Benchmark]: TraceAbstraction took 56057.44ms. Allocated memory was 289.4MB in the beginning and 6.1GB in the end (delta: 5.8GB). Free memory was 198.6MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-15 22:53:04,387 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 202.4MB. Free memory was 154.4MB in the beginning and 154.3MB in the end (delta: 141.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 636.38ms. Allocated memory is still 289.4MB. Free memory was 245.8MB in the beginning and 204.3MB in the end (delta: 41.5MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.32ms. Allocated memory is still 289.4MB. Free memory was 204.3MB in the beginning and 198.6MB in the end (delta: 5.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.27ms. Allocated memory is still 289.4MB. Free memory was 198.6MB in the beginning and 191.7MB in the end (delta: 6.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 805.25ms. Allocated memory is still 289.4MB. Free memory was 191.7MB in the beginning and 199.1MB in the end (delta: -7.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 56057.44ms. Allocated memory was 289.4MB in the beginning and 6.1GB in the end (delta: 5.8GB). Free memory was 198.6MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 48]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] - GenericResultAtLocation [Line: 375]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [375] - GenericResultAtLocation [Line: 787]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [787] - GenericResultAtLocation [Line: 1006]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1006] - GenericResultAtLocation [Line: 1372]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1372] - GenericResultAtLocation [Line: 1381]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1381] - GenericResultAtLocation [Line: 1398]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1398] - GenericResultAtLocation [Line: 1704]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1704] - GenericResultAtLocation [Line: 1739]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1739] - GenericResultAtLocation [Line: 2804]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2804] - GenericResultAtLocation [Line: 2907]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"EncryptAutoResponder_spec.i","") [2907] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 1377]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 1377). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 19 procedures, 294 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.0s, OverallIterations: 22, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.2s, AutomataDifference: 38.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20809 SdHoareTripleChecker+Valid, 22.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20607 mSDsluCounter, 22647 SdHoareTripleChecker+Invalid, 19.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17610 mSDsCounter, 7055 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40528 IncrementalHoareTripleChecker+Invalid, 47583 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7055 mSolverCounterUnsat, 5037 mSDtfsCounter, 40528 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1468 GetRequests, 1132 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98227occurred in iteration=21, InterpolantAutomatonStates: 240, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 10.5s AutomataMinimizationTime, 22 MinimizatonAttempts, 2422 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 2737 NumberOfCodeBlocks, 2737 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2806 ConstructedInterpolants, 0 QuantifiedInterpolants, 5261 SizeOfPredicates, 8 NumberOfNonLiveVariables, 5577 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 29 InterpolantComputations, 21 PerfectInterpolantSequences, 847/873 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown