/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_spec4_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 23:19:11,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 23:19:11,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 23:19:11,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 23:19:11,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 23:19:11,122 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 23:19:11,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 23:19:11,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 23:19:11,123 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 23:19:11,123 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 23:19:11,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 23:19:11,124 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 23:19:11,124 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 23:19:11,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 23:19:11,125 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 23:19:11,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 23:19:11,125 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 23:19:11,125 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 23:19:11,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 23:19:11,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 23:19:11,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 23:19:11,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 23:19:11,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 23:19:11,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 23:19:11,127 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 23:19:11,127 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 23:19:11,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 23:19:11,128 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 23:19:11,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 23:19:11,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 23:19:11,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 23:19:11,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 23:19:11,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:19:11,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 23:19:11,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 23:19:11,129 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 23:19:11,129 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 23:19:11,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 23:19:11,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 23:19:11,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 23:19:11,130 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 23:19:11,130 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 23:19:11,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 23:19:11,130 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 23:19:11,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 23:19:11,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 23:19:11,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 23:19:11,290 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 23:19:11,290 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 23:19:11,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product31.cil.c [2023-12-19 23:19:12,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 23:19:12,665 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 23:19:12,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product31.cil.c [2023-12-19 23:19:12,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2add069/b0f6ad7f723c4b2f9f237d9bdd26b22c/FLAG8f9f60c91 [2023-12-19 23:19:12,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc2add069/b0f6ad7f723c4b2f9f237d9bdd26b22c [2023-12-19 23:19:12,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 23:19:12,696 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 23:19:12,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 23:19:12,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 23:19:12,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 23:19:12,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:19:12" (1/1) ... [2023-12-19 23:19:12,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c682ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:12, skipping insertion in model container [2023-12-19 23:19:12,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:19:12" (1/1) ... [2023-12-19 23:19:12,752 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 23:19:12,956 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_spec4_product31.cil.c[26985,26998] [2023-12-19 23:19:13,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:19:13,179 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 23:19:13,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [48] [2023-12-19 23:19:13,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1128] [2023-12-19 23:19:13,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1137] [2023-12-19 23:19:13,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1503] [2023-12-19 23:19:13,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1810] [2023-12-19 23:19:13,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2222] [2023-12-19 23:19:13,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignForward_spec.i","") [2580] [2023-12-19 23:19:13,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2607] [2023-12-19 23:19:13,187 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2742] [2023-12-19 23:19:13,187 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2777] [2023-12-19 23:19:13,187 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2794] [2023-12-19 23:19:13,203 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_spec4_product31.cil.c[26985,26998] [2023-12-19 23:19:13,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:19:13,287 INFO L206 MainTranslator]: Completed translation [2023-12-19 23:19:13,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13 WrapperNode [2023-12-19 23:19:13,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 23:19:13,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 23:19:13,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 23:19:13,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 23:19:13,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,344 INFO L138 Inliner]: procedures = 131, calls = 204, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1009 [2023-12-19 23:19:13,345 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 23:19:13,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 23:19:13,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 23:19:13,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 23:19:13,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,357 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,371 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-12-19 23:19:13,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 23:19:13,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 23:19:13,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 23:19:13,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 23:19:13,396 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (1/1) ... [2023-12-19 23:19:13,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:19:13,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:19:13,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 23:19:13,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 23:19:13,493 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-19 23:19:13,493 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-19 23:19:13,493 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-19 23:19:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-19 23:19:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-19 23:19:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-19 23:19:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-19 23:19:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-19 23:19:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-19 23:19:13,494 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-19 23:19:13,495 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-19 23:19:13,495 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-19 23:19:13,495 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-19 23:19:13,495 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-19 23:19:13,496 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-19 23:19:13,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-19 23:19:13,496 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-19 23:19:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-19 23:19:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-19 23:19:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-19 23:19:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-19 23:19:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-19 23:19:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-19 23:19:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-19 23:19:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 23:19:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-19 23:19:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-19 23:19:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-19 23:19:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-19 23:19:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-19 23:19:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-19 23:19:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-19 23:19:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-19 23:19:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-19 23:19:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-19 23:19:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-19 23:19:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-19 23:19:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-19 23:19:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-19 23:19:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-19 23:19:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-19 23:19:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-19 23:19:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-19 23:19:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-19 23:19:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-19 23:19:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 23:19:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 23:19:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 23:19:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 23:19:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-19 23:19:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-19 23:19:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 23:19:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 23:19:13,642 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 23:19:13,644 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 23:19:14,161 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 23:19:14,235 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 23:19:14,235 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 23:19:14,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:19:14 BoogieIcfgContainer [2023-12-19 23:19:14,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 23:19:14,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 23:19:14,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 23:19:14,239 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 23:19:14,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:19:12" (1/3) ... [2023-12-19 23:19:14,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440fdb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:19:14, skipping insertion in model container [2023-12-19 23:19:14,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:19:13" (2/3) ... [2023-12-19 23:19:14,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440fdb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:19:14, skipping insertion in model container [2023-12-19 23:19:14,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:19:14" (3/3) ... [2023-12-19 23:19:14,241 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product31.cil.c [2023-12-19 23:19:14,282 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 23:19:14,282 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 23:19:14,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 23:19:14,324 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;@573ab2d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 23:19:14,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 23:19:14,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 338 states, 254 states have (on average 1.562992125984252) internal successors, (397), 258 states have internal predecessors, (397), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-19 23:19:14,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-19 23:19:14,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:14,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:14,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:14,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:14,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1185593595, now seen corresponding path program 1 times [2023-12-19 23:19:14,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:14,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506078187] [2023-12-19 23:19:14,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:14,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:19:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:19:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:19:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 23:19:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 23:19:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 23:19:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:19:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:19:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:19:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:19:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:19:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 23:19:14,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:14,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506078187] [2023-12-19 23:19:14,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506078187] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:19:14,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593967582] [2023-12-19 23:19:14,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:14,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:19:14,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:19:15,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:19:15,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 23:19:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:15,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 23:19:15,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:19:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 23:19:15,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:19:15,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593967582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:15,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:19:15,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-19 23:19:15,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630247476] [2023-12-19 23:19:15,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:15,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 23:19:15,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:15,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 23:19:15,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:19:15,411 INFO L87 Difference]: Start difference. First operand has 338 states, 254 states have (on average 1.562992125984252) internal successors, (397), 258 states have internal predecessors, (397), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:15,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:15,504 INFO L93 Difference]: Finished difference Result 531 states and 793 transitions. [2023-12-19 23:19:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 23:19:15,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 101 [2023-12-19 23:19:15,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:15,518 INFO L225 Difference]: With dead ends: 531 [2023-12-19 23:19:15,518 INFO L226 Difference]: Without dead ends: 335 [2023-12-19 23:19:15,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:19:15,525 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:15,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:19:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-19 23:19:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2023-12-19 23:19:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 252 states have (on average 1.5476190476190477) internal successors, (390), 255 states have internal predecessors, (390), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-19 23:19:15,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 507 transitions. [2023-12-19 23:19:15,574 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 507 transitions. Word has length 101 [2023-12-19 23:19:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:15,575 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 507 transitions. [2023-12-19 23:19:15,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 507 transitions. [2023-12-19 23:19:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-19 23:19:15,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:15,579 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:15,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 23:19:15,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 23:19:15,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:15,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:15,782 INFO L85 PathProgramCache]: Analyzing trace with hash -57490092, now seen corresponding path program 1 times [2023-12-19 23:19:15,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:15,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316186964] [2023-12-19 23:19:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:15,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:15,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:19:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:19:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:19:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:19:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 23:19:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 23:19:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:19:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:19:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:19:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:19:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:19:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 23:19:16,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:16,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316186964] [2023-12-19 23:19:16,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316186964] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:19:16,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750879768] [2023-12-19 23:19:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:16,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:19:16,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:19:16,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:19:16,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 23:19:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 23:19:16,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:19:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 23:19:16,388 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:19:16,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750879768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:16,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:19:16,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-19 23:19:16,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000604301] [2023-12-19 23:19:16,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:16,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:19:16,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:16,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:19:16,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:19:16,391 INFO L87 Difference]: Start difference. First operand 335 states and 507 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:16,447 INFO L93 Difference]: Finished difference Result 527 states and 780 transitions. [2023-12-19 23:19:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:19:16,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 102 [2023-12-19 23:19:16,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:16,451 INFO L225 Difference]: With dead ends: 527 [2023-12-19 23:19:16,451 INFO L226 Difference]: Without dead ends: 337 [2023-12-19 23:19:16,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:19:16,453 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 0 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:16,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 983 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:19:16,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-12-19 23:19:16,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2023-12-19 23:19:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 254 states have (on average 1.5433070866141732) internal successors, (392), 257 states have internal predecessors, (392), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-19 23:19:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 509 transitions. [2023-12-19 23:19:16,484 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 509 transitions. Word has length 102 [2023-12-19 23:19:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:16,486 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 509 transitions. [2023-12-19 23:19:16,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:16,488 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 509 transitions. [2023-12-19 23:19:16,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-19 23:19:16,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:16,494 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:16,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 23:19:16,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 23:19:16,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:16,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:16,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1379490395, now seen corresponding path program 1 times [2023-12-19 23:19:16,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:16,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856028847] [2023-12-19 23:19:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:16,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:19:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:19:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:19:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 23:19:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 23:19:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:19:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:19:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:19:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:19:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:19:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:19:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 23:19:16,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:16,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856028847] [2023-12-19 23:19:16,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856028847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:19:16,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13991395] [2023-12-19 23:19:16,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:16,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:19:16,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:19:16,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:19:17,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 23:19:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 23:19:17,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:19:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 23:19:17,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:19:17,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13991395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:17,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:19:17,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-19 23:19:17,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917014185] [2023-12-19 23:19:17,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:17,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:19:17,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:17,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:19:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:19:17,258 INFO L87 Difference]: Start difference. First operand 337 states and 509 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:17,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:17,322 INFO L93 Difference]: Finished difference Result 704 states and 1077 transitions. [2023-12-19 23:19:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:19:17,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2023-12-19 23:19:17,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:17,325 INFO L225 Difference]: With dead ends: 704 [2023-12-19 23:19:17,326 INFO L226 Difference]: Without dead ends: 389 [2023-12-19 23:19:17,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:19:17,327 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 102 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 951 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 [2023-12-19 23:19:17,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 951 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:19:17,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-19 23:19:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 384. [2023-12-19 23:19:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 290 states have (on average 1.5586206896551724) internal successors, (452), 293 states have internal predecessors, (452), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-12-19 23:19:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 591 transitions. [2023-12-19 23:19:17,356 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 591 transitions. Word has length 107 [2023-12-19 23:19:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:17,357 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 591 transitions. [2023-12-19 23:19:17,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 591 transitions. [2023-12-19 23:19:17,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 23:19:17,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:17,359 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:17,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 23:19:17,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:19:17,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:17,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash 639584868, now seen corresponding path program 1 times [2023-12-19 23:19:17,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:17,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586940422] [2023-12-19 23:19:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:17,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:19:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:19:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:19:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 23:19:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 23:19:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 23:19:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:19:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:19:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:19:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:19:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:19:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,719 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 23:19:17,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:17,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586940422] [2023-12-19 23:19:17,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586940422] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:19:17,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357324732] [2023-12-19 23:19:17,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:17,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:19:17,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:19:17,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:19:17,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 23:19:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:17,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 23:19:17,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:19:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 23:19:18,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:19:18,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357324732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:18,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:19:18,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-19 23:19:18,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67926789] [2023-12-19 23:19:18,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:18,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:19:18,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:18,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:19:18,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 23:19:18,024 INFO L87 Difference]: Start difference. First operand 384 states and 591 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 23:19:18,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:18,095 INFO L93 Difference]: Finished difference Result 763 states and 1176 transitions. [2023-12-19 23:19:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:19:18,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 108 [2023-12-19 23:19:18,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:18,097 INFO L225 Difference]: With dead ends: 763 [2023-12-19 23:19:18,097 INFO L226 Difference]: Without dead ends: 386 [2023-12-19 23:19:18,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:18,099 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 8 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:18,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1921 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:19:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-12-19 23:19:18,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2023-12-19 23:19:18,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 291 states have (on average 1.556701030927835) internal successors, (453), 295 states have internal predecessors, (453), 70 states have call successors, (70), 23 states have call predecessors, (70), 24 states have return successors, (71), 69 states have call predecessors, (71), 69 states have call successors, (71) [2023-12-19 23:19:18,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 594 transitions. [2023-12-19 23:19:18,111 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 594 transitions. Word has length 108 [2023-12-19 23:19:18,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:18,111 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 594 transitions. [2023-12-19 23:19:18,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 23:19:18,112 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 594 transitions. [2023-12-19 23:19:18,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 23:19:18,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:18,113 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:18,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 23:19:18,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:19:18,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:18,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:18,320 INFO L85 PathProgramCache]: Analyzing trace with hash -899449877, now seen corresponding path program 1 times [2023-12-19 23:19:18,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:18,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594338143] [2023-12-19 23:19:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:18,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:19:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-19 23:19:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 23:19:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 23:19:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:19:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:19:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:19:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:19:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:19:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 23:19:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 23:19:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:18,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594338143] [2023-12-19 23:19:18,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594338143] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:19:18,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370752515] [2023-12-19 23:19:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:18,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:19:18,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:19:18,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:19:18,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 23:19:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:18,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 23:19:18,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:19:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 23:19:18,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:19:18,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370752515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:18,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:19:18,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-19 23:19:18,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071800928] [2023-12-19 23:19:18,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:18,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:19:18,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:18,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:19:18,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-19 23:19:18,796 INFO L87 Difference]: Start difference. First operand 386 states and 594 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 23:19:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:18,873 INFO L93 Difference]: Finished difference Result 765 states and 1181 transitions. [2023-12-19 23:19:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:19:18,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 109 [2023-12-19 23:19:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:18,876 INFO L225 Difference]: With dead ends: 765 [2023-12-19 23:19:18,876 INFO L226 Difference]: Without dead ends: 388 [2023-12-19 23:19:18,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-19 23:19:18,879 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 8 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:18,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1907 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:19:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-19 23:19:18,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2023-12-19 23:19:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 292 states have (on average 1.5547945205479452) internal successors, (454), 297 states have internal predecessors, (454), 70 states have call successors, (70), 23 states have call predecessors, (70), 25 states have return successors, (76), 69 states have call predecessors, (76), 69 states have call successors, (76) [2023-12-19 23:19:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 600 transitions. [2023-12-19 23:19:18,897 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 600 transitions. Word has length 109 [2023-12-19 23:19:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:18,897 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 600 transitions. [2023-12-19 23:19:18,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 23:19:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 600 transitions. [2023-12-19 23:19:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 23:19:18,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:18,899 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:18,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 23:19:19,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:19:19,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:19,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash -506560013, now seen corresponding path program 1 times [2023-12-19 23:19:19,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:19,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137093832] [2023-12-19 23:19:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:19,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 23:19:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 23:19:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 23:19:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:19:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:19:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:19:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:19:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:19:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:19:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 23:19:19,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:19,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137093832] [2023-12-19 23:19:19,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137093832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:19,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:19,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 23:19:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509560736] [2023-12-19 23:19:19,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:19,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 23:19:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:19,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 23:19:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:19:19,267 INFO L87 Difference]: Start difference. First operand 388 states and 600 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 23:19:20,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:20,950 INFO L93 Difference]: Finished difference Result 901 states and 1406 transitions. [2023-12-19 23:19:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 23:19:20,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 110 [2023-12-19 23:19:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:20,954 INFO L225 Difference]: With dead ends: 901 [2023-12-19 23:19:20,954 INFO L226 Difference]: Without dead ends: 532 [2023-12-19 23:19:20,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 23:19:20,956 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1108 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2734 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:20,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 963 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2734 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 23:19:20,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2023-12-19 23:19:20,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 388. [2023-12-19 23:19:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 292 states have (on average 1.5547945205479452) internal successors, (454), 297 states have internal predecessors, (454), 70 states have call successors, (70), 23 states have call predecessors, (70), 25 states have return successors, (75), 69 states have call predecessors, (75), 69 states have call successors, (75) [2023-12-19 23:19:20,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 599 transitions. [2023-12-19 23:19:20,979 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 599 transitions. Word has length 110 [2023-12-19 23:19:20,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:20,979 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 599 transitions. [2023-12-19 23:19:20,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 23:19:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 599 transitions. [2023-12-19 23:19:20,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 23:19:20,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:20,981 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:20,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 23:19:20,981 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:20,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash 867298140, now seen corresponding path program 2 times [2023-12-19 23:19:20,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:20,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305270647] [2023-12-19 23:19:20,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:20,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:19:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 23:19:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 23:19:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 23:19:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:19:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:19:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:19:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 23:19:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 23:19:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 23:19:21,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:21,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305270647] [2023-12-19 23:19:21,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305270647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:21,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:21,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 23:19:21,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901535567] [2023-12-19 23:19:21,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:21,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 23:19:21,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:21,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 23:19:21,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:19:21,191 INFO L87 Difference]: Start difference. First operand 388 states and 599 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 23:19:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:22,807 INFO L93 Difference]: Finished difference Result 903 states and 1409 transitions. [2023-12-19 23:19:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 23:19:22,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 111 [2023-12-19 23:19:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:22,811 INFO L225 Difference]: With dead ends: 903 [2023-12-19 23:19:22,811 INFO L226 Difference]: Without dead ends: 534 [2023-12-19 23:19:22,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 23:19:22,813 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1103 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:22,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 963 Invalid, 3128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 2744 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 23:19:22,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-12-19 23:19:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 390. [2023-12-19 23:19:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 293 states have (on average 1.552901023890785) internal successors, (455), 299 states have internal predecessors, (455), 70 states have call successors, (70), 23 states have call predecessors, (70), 26 states have return successors, (77), 69 states have call predecessors, (77), 69 states have call successors, (77) [2023-12-19 23:19:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 602 transitions. [2023-12-19 23:19:22,841 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 602 transitions. Word has length 111 [2023-12-19 23:19:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:22,842 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 602 transitions. [2023-12-19 23:19:22,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 23:19:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 602 transitions. [2023-12-19 23:19:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-19 23:19:22,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:22,843 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:22,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 23:19:22,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:22,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1945939054, now seen corresponding path program 1 times [2023-12-19 23:19:22,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:22,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051541442] [2023-12-19 23:19:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:22,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:22,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:22,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:22,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:22,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 23:19:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 23:19:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:23,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:19:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:23,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:19:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:19:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:19:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 23:19:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:23,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 23:19:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 23:19:23,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051541442] [2023-12-19 23:19:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051541442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:23,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:23,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 23:19:23,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177703295] [2023-12-19 23:19:23,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:23,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 23:19:23,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:23,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 23:19:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-19 23:19:23,060 INFO L87 Difference]: Start difference. First operand 390 states and 602 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 23:19:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:25,289 INFO L93 Difference]: Finished difference Result 901 states and 1404 transitions. [2023-12-19 23:19:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 23:19:25,289 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 112 [2023-12-19 23:19:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:25,292 INFO L225 Difference]: With dead ends: 901 [2023-12-19 23:19:25,292 INFO L226 Difference]: Without dead ends: 534 [2023-12-19 23:19:25,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-19 23:19:25,295 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1113 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:25,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1332 Invalid, 4948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 4559 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 23:19:25,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2023-12-19 23:19:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 390. [2023-12-19 23:19:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 293 states have (on average 1.552901023890785) internal successors, (455), 299 states have internal predecessors, (455), 70 states have call successors, (70), 23 states have call predecessors, (70), 26 states have return successors, (76), 69 states have call predecessors, (76), 69 states have call successors, (76) [2023-12-19 23:19:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 601 transitions. [2023-12-19 23:19:25,321 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 601 transitions. Word has length 112 [2023-12-19 23:19:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:25,321 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 601 transitions. [2023-12-19 23:19:25,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 23:19:25,322 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 601 transitions. [2023-12-19 23:19:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 23:19:25,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:25,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:25,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 23:19:25,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:25,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash -286793932, now seen corresponding path program 2 times [2023-12-19 23:19:25,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:25,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943257343] [2023-12-19 23:19:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:25,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 23:19:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 23:19:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:19:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:19:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:19:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:19:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:19:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:19:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-19 23:19:25,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:25,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943257343] [2023-12-19 23:19:25,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943257343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:25,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:25,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 23:19:25,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925169169] [2023-12-19 23:19:25,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:25,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 23:19:25,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:25,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 23:19:25,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-19 23:19:25,513 INFO L87 Difference]: Start difference. First operand 390 states and 601 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 23:19:27,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:27,902 INFO L93 Difference]: Finished difference Result 903 states and 1410 transitions. [2023-12-19 23:19:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 23:19:27,902 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 113 [2023-12-19 23:19:27,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:27,906 INFO L225 Difference]: With dead ends: 903 [2023-12-19 23:19:27,906 INFO L226 Difference]: Without dead ends: 536 [2023-12-19 23:19:27,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-19 23:19:27,909 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1108 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 4585 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 4973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 4585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:27,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 1332 Invalid, 4973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 4585 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 23:19:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-12-19 23:19:27,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 392. [2023-12-19 23:19:27,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 294 states have (on average 1.5510204081632653) internal successors, (456), 301 states have internal predecessors, (456), 70 states have call successors, (70), 23 states have call predecessors, (70), 27 states have return successors, (81), 69 states have call predecessors, (81), 69 states have call successors, (81) [2023-12-19 23:19:27,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 607 transitions. [2023-12-19 23:19:27,929 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 607 transitions. Word has length 113 [2023-12-19 23:19:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:27,929 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 607 transitions. [2023-12-19 23:19:27,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-12-19 23:19:27,929 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 607 transitions. [2023-12-19 23:19:27,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 23:19:27,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:27,930 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:27,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 23:19:27,931 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:27,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:27,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1436017353, now seen corresponding path program 1 times [2023-12-19 23:19:27,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:27,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309960356] [2023-12-19 23:19:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:27,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 23:19:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:19:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:19:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:19:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:19:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:19:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:19:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:19:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:28,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:28,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309960356] [2023-12-19 23:19:28,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309960356] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:19:28,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346647629] [2023-12-19 23:19:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:28,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:19:28,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:19:28,049 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:19:28,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 23:19:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:28,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 23:19:28,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:19:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:28,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:19:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:28,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346647629] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:19:28,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:19:28,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2023-12-19 23:19:28,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199807211] [2023-12-19 23:19:28,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:19:28,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 23:19:28,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 23:19:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:19:28,365 INFO L87 Difference]: Start difference. First operand 392 states and 607 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 23:19:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:29,861 INFO L93 Difference]: Finished difference Result 1056 states and 1722 transitions. [2023-12-19 23:19:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 23:19:29,862 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 114 [2023-12-19 23:19:29,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:29,867 INFO L225 Difference]: With dead ends: 1056 [2023-12-19 23:19:29,867 INFO L226 Difference]: Without dead ends: 866 [2023-12-19 23:19:29,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-12-19 23:19:29,869 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1489 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:29,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1191 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 23:19:29,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2023-12-19 23:19:29,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 707. [2023-12-19 23:19:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 545 states have (on average 1.61651376146789) internal successors, (881), 552 states have internal predecessors, (881), 134 states have call successors, (134), 23 states have call predecessors, (134), 27 states have return successors, (155), 133 states have call predecessors, (155), 133 states have call successors, (155) [2023-12-19 23:19:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1170 transitions. [2023-12-19 23:19:29,898 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1170 transitions. Word has length 114 [2023-12-19 23:19:29,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:29,899 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1170 transitions. [2023-12-19 23:19:29,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 7 states have internal predecessors, (103), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-19 23:19:29,899 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1170 transitions. [2023-12-19 23:19:29,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 23:19:29,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:29,902 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:29,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 23:19:30,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:19:30,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:30,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2058957364, now seen corresponding path program 1 times [2023-12-19 23:19:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:30,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389557461] [2023-12-19 23:19:30,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:30,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:19:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:19:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:19:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:19:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:19:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:19:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:19:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:19:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:30,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:30,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389557461] [2023-12-19 23:19:30,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389557461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:30,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:30,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:19:30,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771056704] [2023-12-19 23:19:30,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:30,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:19:30,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:30,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:19:30,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:19:30,188 INFO L87 Difference]: Start difference. First operand 707 states and 1170 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:31,190 INFO L93 Difference]: Finished difference Result 1815 states and 3071 transitions. [2023-12-19 23:19:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:19:31,190 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 120 [2023-12-19 23:19:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:31,206 INFO L225 Difference]: With dead ends: 1815 [2023-12-19 23:19:31,206 INFO L226 Difference]: Without dead ends: 1168 [2023-12-19 23:19:31,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:31,209 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1197 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:31,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 756 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:19:31,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2023-12-19 23:19:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1019. [2023-12-19 23:19:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 793 states have (on average 1.630517023959647) internal successors, (1293), 800 states have internal predecessors, (1293), 198 states have call successors, (198), 23 states have call predecessors, (198), 27 states have return successors, (229), 197 states have call predecessors, (229), 197 states have call successors, (229) [2023-12-19 23:19:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1720 transitions. [2023-12-19 23:19:31,292 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1720 transitions. Word has length 120 [2023-12-19 23:19:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:31,292 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1720 transitions. [2023-12-19 23:19:31,292 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, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1720 transitions. [2023-12-19 23:19:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-19 23:19:31,296 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:31,296 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:31,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 23:19:31,296 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:31,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:31,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1009657450, now seen corresponding path program 1 times [2023-12-19 23:19:31,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:31,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557517834] [2023-12-19 23:19:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:31,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 23:19:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:19:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:19:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:19:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:19:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:19:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:19:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 23:19:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:31,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:31,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557517834] [2023-12-19 23:19:31,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557517834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:31,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:31,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:19:31,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992145670] [2023-12-19 23:19:31,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:31,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:19:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:19:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:19:31,364 INFO L87 Difference]: Start difference. First operand 1019 states and 1720 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:32,523 INFO L93 Difference]: Finished difference Result 2564 states and 4389 transitions. [2023-12-19 23:19:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:19:32,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2023-12-19 23:19:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:32,531 INFO L225 Difference]: With dead ends: 2564 [2023-12-19 23:19:32,532 INFO L226 Difference]: Without dead ends: 1655 [2023-12-19 23:19:32,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:32,535 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1195 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:32,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 722 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 23:19:32,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2023-12-19 23:19:32,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1506. [2023-12-19 23:19:32,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1185 states have (on average 1.639662447257384) internal successors, (1943), 1192 states have internal predecessors, (1943), 293 states have call successors, (293), 23 states have call predecessors, (293), 27 states have return successors, (324), 292 states have call predecessors, (324), 292 states have call successors, (324) [2023-12-19 23:19:32,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2560 transitions. [2023-12-19 23:19:32,582 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2560 transitions. Word has length 121 [2023-12-19 23:19:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:32,583 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2560 transitions. [2023-12-19 23:19:32,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2560 transitions. [2023-12-19 23:19:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-19 23:19:32,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:32,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:32,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 23:19:32,589 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:32,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:32,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1972328298, now seen corresponding path program 1 times [2023-12-19 23:19:32,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:32,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818355424] [2023-12-19 23:19:32,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:32,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:19:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:19:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:19:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:19:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:19:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 23:19:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:19:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 23:19:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:32,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:32,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818355424] [2023-12-19 23:19:32,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818355424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:32,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:32,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:19:32,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360030256] [2023-12-19 23:19:32,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:32,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:19:32,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:32,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:19:32,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:19:32,660 INFO L87 Difference]: Start difference. First operand 1506 states and 2560 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:34,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:34,141 INFO L93 Difference]: Finished difference Result 3666 states and 6348 transitions. [2023-12-19 23:19:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:19:34,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 122 [2023-12-19 23:19:34,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:34,150 INFO L225 Difference]: With dead ends: 3666 [2023-12-19 23:19:34,150 INFO L226 Difference]: Without dead ends: 2390 [2023-12-19 23:19:34,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:34,154 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1193 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:34,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 708 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 23:19:34,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2023-12-19 23:19:34,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2241. [2023-12-19 23:19:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 1797 states have (on average 1.6471897607122983) internal successors, (2960), 1804 states have internal predecessors, (2960), 416 states have call successors, (416), 23 states have call predecessors, (416), 27 states have return successors, (463), 415 states have call predecessors, (463), 415 states have call successors, (463) [2023-12-19 23:19:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 3839 transitions. [2023-12-19 23:19:34,222 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 3839 transitions. Word has length 122 [2023-12-19 23:19:34,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:34,222 INFO L495 AbstractCegarLoop]: Abstraction has 2241 states and 3839 transitions. [2023-12-19 23:19:34,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:34,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 3839 transitions. [2023-12-19 23:19:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 23:19:34,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:34,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:34,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 23:19:34,230 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:34,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:34,230 INFO L85 PathProgramCache]: Analyzing trace with hash 541597333, now seen corresponding path program 1 times [2023-12-19 23:19:34,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:34,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69997176] [2023-12-19 23:19:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:34,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:19:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:19:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:19:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 23:19:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:19:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:19:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 23:19:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 23:19:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:34,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:34,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69997176] [2023-12-19 23:19:34,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69997176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:34,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:34,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:19:34,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568881502] [2023-12-19 23:19:34,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:34,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:19:34,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:34,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:19:34,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:19:34,301 INFO L87 Difference]: Start difference. First operand 2241 states and 3839 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:35,774 INFO L93 Difference]: Finished difference Result 5376 states and 9398 transitions. [2023-12-19 23:19:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:19:35,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2023-12-19 23:19:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:35,792 INFO L225 Difference]: With dead ends: 5376 [2023-12-19 23:19:35,792 INFO L226 Difference]: Without dead ends: 3562 [2023-12-19 23:19:35,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:35,799 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1191 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:35,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 711 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1548 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 23:19:35,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2023-12-19 23:19:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 3413. [2023-12-19 23:19:35,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3413 states, 2790 states have (on average 1.6523297491039426) internal successors, (4610), 2797 states have internal predecessors, (4610), 595 states have call successors, (595), 23 states have call predecessors, (595), 27 states have return successors, (668), 594 states have call predecessors, (668), 594 states have call successors, (668) [2023-12-19 23:19:35,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 5873 transitions. [2023-12-19 23:19:35,921 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 5873 transitions. Word has length 123 [2023-12-19 23:19:35,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:35,921 INFO L495 AbstractCegarLoop]: Abstraction has 3413 states and 5873 transitions. [2023-12-19 23:19:35,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:35,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 5873 transitions. [2023-12-19 23:19:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-19 23:19:35,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:35,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:35,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 23:19:35,933 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:35,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:35,933 INFO L85 PathProgramCache]: Analyzing trace with hash -214302674, now seen corresponding path program 1 times [2023-12-19 23:19:35,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:35,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688509079] [2023-12-19 23:19:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:35,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:35,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:35,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:35,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:35,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:35,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:35,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 23:19:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:36,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:19:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:36,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:19:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:36,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:19:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:36,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:19:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:36,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 23:19:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:36,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 23:19:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:36,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 23:19:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:36,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:36,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688509079] [2023-12-19 23:19:36,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688509079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:36,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:36,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:19:36,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276099266] [2023-12-19 23:19:36,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:36,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:19:36,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:19:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:19:36,015 INFO L87 Difference]: Start difference. First operand 3413 states and 5873 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:37,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:37,389 INFO L93 Difference]: Finished difference Result 8231 states and 14452 transitions. [2023-12-19 23:19:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:19:37,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2023-12-19 23:19:37,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:37,414 INFO L225 Difference]: With dead ends: 8231 [2023-12-19 23:19:37,415 INFO L226 Difference]: Without dead ends: 5532 [2023-12-19 23:19:37,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:37,424 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 1189 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:37,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 740 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:19:37,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2023-12-19 23:19:37,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 5383. [2023-12-19 23:19:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5383 states, 4384 states have (on average 1.6425638686131387) internal successors, (7201), 4391 states have internal predecessors, (7201), 971 states have call successors, (971), 23 states have call predecessors, (971), 27 states have return successors, (1088), 970 states have call predecessors, (1088), 970 states have call successors, (1088) [2023-12-19 23:19:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5383 states to 5383 states and 9260 transitions. [2023-12-19 23:19:37,697 INFO L78 Accepts]: Start accepts. Automaton has 5383 states and 9260 transitions. Word has length 124 [2023-12-19 23:19:37,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:37,697 INFO L495 AbstractCegarLoop]: Abstraction has 5383 states and 9260 transitions. [2023-12-19 23:19:37,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:37,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5383 states and 9260 transitions. [2023-12-19 23:19:37,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 23:19:37,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:37,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:37,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 23:19:37,714 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:37,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:37,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1589285329, now seen corresponding path program 1 times [2023-12-19 23:19:37,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:37,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741392179] [2023-12-19 23:19:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:37,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:19:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:19:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:19:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:19:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:19:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 23:19:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 23:19:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 23:19:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:37,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:37,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741392179] [2023-12-19 23:19:37,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741392179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:37,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:37,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:19:37,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373005176] [2023-12-19 23:19:37,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:37,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:19:37,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:37,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:19:37,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:19:37,795 INFO L87 Difference]: Start difference. First operand 5383 states and 9260 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:39,344 INFO L93 Difference]: Finished difference Result 13368 states and 23473 transitions. [2023-12-19 23:19:39,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:19:39,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 125 [2023-12-19 23:19:39,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:39,385 INFO L225 Difference]: With dead ends: 13368 [2023-12-19 23:19:39,385 INFO L226 Difference]: Without dead ends: 9065 [2023-12-19 23:19:39,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:39,394 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1187 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:39,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 716 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 23:19:39,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9065 states. [2023-12-19 23:19:39,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 8916. [2023-12-19 23:19:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8916 states, 7311 states have (on average 1.640951990151826) internal successors, (11997), 7318 states have internal predecessors, (11997), 1577 states have call successors, (1577), 23 states have call predecessors, (1577), 27 states have return successors, (1772), 1576 states have call predecessors, (1772), 1576 states have call successors, (1772) [2023-12-19 23:19:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8916 states to 8916 states and 15346 transitions. [2023-12-19 23:19:39,679 INFO L78 Accepts]: Start accepts. Automaton has 8916 states and 15346 transitions. Word has length 125 [2023-12-19 23:19:39,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:39,680 INFO L495 AbstractCegarLoop]: Abstraction has 8916 states and 15346 transitions. [2023-12-19 23:19:39,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 8916 states and 15346 transitions. [2023-12-19 23:19:39,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 23:19:39,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:39,701 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:39,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 23:19:39,701 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:39,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:39,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2079676928, now seen corresponding path program 1 times [2023-12-19 23:19:39,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:39,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126289048] [2023-12-19 23:19:39,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:39,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:19:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:19:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:19:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:19:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:19:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:19:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 23:19:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 23:19:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:39,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:39,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126289048] [2023-12-19 23:19:39,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126289048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:39,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:39,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:19:39,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468582813] [2023-12-19 23:19:39,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:39,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:19:39,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:19:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:19:39,778 INFO L87 Difference]: Start difference. First operand 8916 states and 15346 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:41,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:41,309 INFO L93 Difference]: Finished difference Result 23140 states and 40607 transitions. [2023-12-19 23:19:41,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:19:41,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 126 [2023-12-19 23:19:41,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:41,352 INFO L225 Difference]: With dead ends: 23140 [2023-12-19 23:19:41,353 INFO L226 Difference]: Without dead ends: 15737 [2023-12-19 23:19:41,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:41,368 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1185 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:41,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 742 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:19:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15737 states. [2023-12-19 23:19:41,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15737 to 15588. [2023-12-19 23:19:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15588 states, 12780 states have (on average 1.6320813771517997) internal successors, (20858), 12787 states have internal predecessors, (20858), 2780 states have call successors, (2780), 23 states have call predecessors, (2780), 27 states have return successors, (3119), 2779 states have call predecessors, (3119), 2779 states have call successors, (3119) [2023-12-19 23:19:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15588 states to 15588 states and 26757 transitions. [2023-12-19 23:19:41,902 INFO L78 Accepts]: Start accepts. Automaton has 15588 states and 26757 transitions. Word has length 126 [2023-12-19 23:19:41,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:41,902 INFO L495 AbstractCegarLoop]: Abstraction has 15588 states and 26757 transitions. [2023-12-19 23:19:41,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 15588 states and 26757 transitions. [2023-12-19 23:19:41,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-19 23:19:41,930 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:41,930 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:41,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 23:19:41,930 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:41,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2104936016, now seen corresponding path program 1 times [2023-12-19 23:19:41,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:41,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572966679] [2023-12-19 23:19:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:41,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:41,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:41,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:41,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:41,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:41,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:19:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:42,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:19:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:42,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:19:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:42,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:19:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:42,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:19:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:42,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:19:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:42,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:19:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 23:19:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:42,008 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:42,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:42,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572966679] [2023-12-19 23:19:42,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572966679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:42,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:42,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:19:42,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134113449] [2023-12-19 23:19:42,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:42,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:19:42,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:42,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:19:42,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:19:42,011 INFO L87 Difference]: Start difference. First operand 15588 states and 26757 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:43,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:43,709 INFO L93 Difference]: Finished difference Result 41307 states and 72407 transitions. [2023-12-19 23:19:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:19:43,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 127 [2023-12-19 23:19:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:43,953 INFO L225 Difference]: With dead ends: 41307 [2023-12-19 23:19:43,953 INFO L226 Difference]: Without dead ends: 27852 [2023-12-19 23:19:43,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:43,981 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1183 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:43,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 709 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:19:43,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27852 states. [2023-12-19 23:19:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27852 to 27703. [2023-12-19 23:19:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27703 states, 22856 states have (on average 1.6285439271963598) internal successors, (37222), 22863 states have internal predecessors, (37222), 4819 states have call successors, (4819), 23 states have call predecessors, (4819), 27 states have return successors, (5432), 4818 states have call predecessors, (5432), 4818 states have call successors, (5432) [2023-12-19 23:19:44,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27703 states to 27703 states and 47473 transitions. [2023-12-19 23:19:44,865 INFO L78 Accepts]: Start accepts. Automaton has 27703 states and 47473 transitions. Word has length 127 [2023-12-19 23:19:44,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:44,866 INFO L495 AbstractCegarLoop]: Abstraction has 27703 states and 47473 transitions. [2023-12-19 23:19:44,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 27703 states and 47473 transitions. [2023-12-19 23:19:44,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 23:19:44,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:44,897 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:44,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 23:19:44,897 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:44,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:44,897 INFO L85 PathProgramCache]: Analyzing trace with hash 713785054, now seen corresponding path program 1 times [2023-12-19 23:19:44,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:44,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994431773] [2023-12-19 23:19:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:44,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:19:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:19:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:19:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:19:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 23:19:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:19:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 23:19:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 23:19:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:44,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:44,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994431773] [2023-12-19 23:19:44,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994431773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:44,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:44,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:19:44,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755310122] [2023-12-19 23:19:44,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:44,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:19:44,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:44,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:19:44,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:19:44,971 INFO L87 Difference]: Start difference. First operand 27703 states and 47473 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:47,375 INFO L93 Difference]: Finished difference Result 75499 states and 131596 transitions. [2023-12-19 23:19:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:19:47,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2023-12-19 23:19:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:47,533 INFO L225 Difference]: With dead ends: 75499 [2023-12-19 23:19:47,533 INFO L226 Difference]: Without dead ends: 50676 [2023-12-19 23:19:47,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:47,581 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1181 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:47,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 715 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:19:47,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50676 states. [2023-12-19 23:19:49,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50676 to 50527. [2023-12-19 23:19:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50527 states, 41965 states have (on average 1.6236387465745263) internal successors, (68136), 41972 states have internal predecessors, (68136), 8534 states have call successors, (8534), 23 states have call predecessors, (8534), 27 states have return successors, (9679), 8533 states have call predecessors, (9679), 8533 states have call successors, (9679) [2023-12-19 23:19:49,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50527 states to 50527 states and 86349 transitions. [2023-12-19 23:19:49,366 INFO L78 Accepts]: Start accepts. Automaton has 50527 states and 86349 transitions. Word has length 128 [2023-12-19 23:19:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:49,367 INFO L495 AbstractCegarLoop]: Abstraction has 50527 states and 86349 transitions. [2023-12-19 23:19:49,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 50527 states and 86349 transitions. [2023-12-19 23:19:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-19 23:19:49,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:49,401 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:49,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 23:19:49,401 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:49,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:49,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1304849680, now seen corresponding path program 1 times [2023-12-19 23:19:49,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:49,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981559761] [2023-12-19 23:19:49,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:49,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:19:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:19:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:19:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:19:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 23:19:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 23:19:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 23:19:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 23:19:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:49,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:49,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981559761] [2023-12-19 23:19:49,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981559761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:49,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:49,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:19:49,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247274649] [2023-12-19 23:19:49,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:49,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:19:49,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:49,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:19:49,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:19:49,482 INFO L87 Difference]: Start difference. First operand 50527 states and 86349 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:52,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:52,508 INFO L93 Difference]: Finished difference Result 94246 states and 164759 transitions. [2023-12-19 23:19:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:19:52,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2023-12-19 23:19:52,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:52,970 INFO L225 Difference]: With dead ends: 94246 [2023-12-19 23:19:52,970 INFO L226 Difference]: Without dead ends: 94056 [2023-12-19 23:19:53,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:53,002 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1179 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:53,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 709 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 23:19:53,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94056 states. [2023-12-19 23:19:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94056 to 93907. [2023-12-19 23:19:55,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93907 states, 78546 states have (on average 1.6172306673796246) internal successors, (127027), 78553 states have internal predecessors, (127027), 15333 states have call successors, (15333), 23 states have call predecessors, (15333), 27 states have return successors, (17524), 15332 states have call predecessors, (17524), 15332 states have call successors, (17524) [2023-12-19 23:19:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93907 states to 93907 states and 159884 transitions. [2023-12-19 23:19:56,455 INFO L78 Accepts]: Start accepts. Automaton has 93907 states and 159884 transitions. Word has length 129 [2023-12-19 23:19:56,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:56,455 INFO L495 AbstractCegarLoop]: Abstraction has 93907 states and 159884 transitions. [2023-12-19 23:19:56,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:19:56,456 INFO L276 IsEmpty]: Start isEmpty. Operand 93907 states and 159884 transitions. [2023-12-19 23:19:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-19 23:19:56,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:56,504 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:19:56,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 23:19:56,505 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:56,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2095318145, now seen corresponding path program 1 times [2023-12-19 23:19:56,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:56,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910478599] [2023-12-19 23:19:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:56,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:19:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:19:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:19:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:19:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:19:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 23:19:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 23:19:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 23:19:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:19:56,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:56,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910478599] [2023-12-19 23:19:56,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910478599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:56,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:56,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-19 23:19:56,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618027106] [2023-12-19 23:19:56,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:56,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 23:19:56,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 23:19:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2023-12-19 23:19:56,955 INFO L87 Difference]: Start difference. First operand 93907 states and 159884 transitions. Second operand has 18 states, 16 states have (on average 5.25) internal successors, (84), 12 states have internal predecessors, (84), 6 states have call successors, (16), 7 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-19 23:20:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:20:06,087 INFO L93 Difference]: Finished difference Result 187927 states and 331860 transitions. [2023-12-19 23:20:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-19 23:20:06,088 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.25) internal successors, (84), 12 states have internal predecessors, (84), 6 states have call successors, (16), 7 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 130 [2023-12-19 23:20:06,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:20:07,117 INFO L225 Difference]: With dead ends: 187927 [2023-12-19 23:20:07,117 INFO L226 Difference]: Without dead ends: 187742 [2023-12-19 23:20:07,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=961, Invalid=4441, Unknown=0, NotChecked=0, Total=5402 [2023-12-19 23:20:07,185 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 4467 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 9662 mSolverCounterSat, 1689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4467 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 11351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1689 IncrementalHoareTripleChecker+Valid, 9662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:20:07,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4467 Valid, 2683 Invalid, 11351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1689 Valid, 9662 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-19 23:20:07,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187742 states. [2023-12-19 23:20:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187742 to 187076. [2023-12-19 23:20:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187076 states, 156528 states have (on average 1.6180427782888684) internal successors, (253269), 156433 states have internal predecessors, (253269), 30476 states have call successors, (30476), 62 states have call predecessors, (30476), 71 states have return successors, (38135), 30586 states have call predecessors, (38135), 30473 states have call successors, (38135) [2023-12-19 23:20:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187076 states to 187076 states and 321880 transitions. [2023-12-19 23:20:14,077 INFO L78 Accepts]: Start accepts. Automaton has 187076 states and 321880 transitions. Word has length 130 [2023-12-19 23:20:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:20:14,077 INFO L495 AbstractCegarLoop]: Abstraction has 187076 states and 321880 transitions. [2023-12-19 23:20:14,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.25) internal successors, (84), 12 states have internal predecessors, (84), 6 states have call successors, (16), 7 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-19 23:20:14,078 INFO L276 IsEmpty]: Start isEmpty. Operand 187076 states and 321880 transitions. [2023-12-19 23:20:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 23:20:14,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:20:14,169 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:20:14,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 23:20:14,169 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:20:14,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:20:14,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1248153489, now seen corresponding path program 1 times [2023-12-19 23:20:14,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:20:14,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966687225] [2023-12-19 23:20:14,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:20:14,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:20:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:20:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:20:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:20:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:20:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:20:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:20:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:20:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:20:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:20:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:20:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:20:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 23:20:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 23:20:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 23:20:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:20:14,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:20:14,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966687225] [2023-12-19 23:20:14,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966687225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:20:14,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:20:14,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-19 23:20:14,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437798974] [2023-12-19 23:20:14,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:20:14,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 23:20:14,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:20:14,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 23:20:14,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:20:14,353 INFO L87 Difference]: Start difference. First operand 187076 states and 321880 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 8 states have internal predecessors, (85), 5 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-19 23:20:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:20:21,787 INFO L93 Difference]: Finished difference Result 188704 states and 330896 transitions. [2023-12-19 23:20:21,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 23:20:21,787 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 8 states have internal predecessors, (85), 5 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 131 [2023-12-19 23:20:21,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:20:22,630 INFO L225 Difference]: With dead ends: 188704 [2023-12-19 23:20:22,630 INFO L226 Difference]: Without dead ends: 187592 [2023-12-19 23:20:22,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=286, Invalid=974, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 23:20:22,695 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 2391 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 4934 mSolverCounterSat, 949 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 5883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 949 IncrementalHoareTripleChecker+Valid, 4934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:20:22,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2406 Valid, 1424 Invalid, 5883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [949 Valid, 4934 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 23:20:22,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187592 states. [2023-12-19 23:20:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187592 to 187173. [2023-12-19 23:20:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187173 states, 156597 states have (on average 1.6179428724688212) internal successors, (253365), 156507 states have internal predecessors, (253365), 30501 states have call successors, (30501), 65 states have call predecessors, (30501), 74 states have return successors, (38169), 30609 states have call predecessors, (38169), 30498 states have call successors, (38169) [2023-12-19 23:20:30,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187173 states to 187173 states and 322035 transitions. [2023-12-19 23:20:30,195 INFO L78 Accepts]: Start accepts. Automaton has 187173 states and 322035 transitions. Word has length 131 [2023-12-19 23:20:30,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:20:30,196 INFO L495 AbstractCegarLoop]: Abstraction has 187173 states and 322035 transitions. [2023-12-19 23:20:30,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 8 states have internal predecessors, (85), 5 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-12-19 23:20:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 187173 states and 322035 transitions. [2023-12-19 23:20:30,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 23:20:30,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:20:30,283 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:20:30,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 23:20:30,283 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:20:30,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:20:30,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1450760922, now seen corresponding path program 1 times [2023-12-19 23:20:30,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:20:30,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835195791] [2023-12-19 23:20:30,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:20:30,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:20:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:20:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:20:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:20:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:20:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:20:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:20:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:20:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:20:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:20:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:20:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:20:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 23:20:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 23:20:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 23:20:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:20:30,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:20:30,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835195791] [2023-12-19 23:20:30,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835195791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:20:30,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:20:30,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 23:20:30,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073409180] [2023-12-19 23:20:30,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:20:30,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 23:20:30,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:20:30,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 23:20:30,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:20:30,475 INFO L87 Difference]: Start difference. First operand 187173 states and 322035 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:20:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:20:39,749 INFO L93 Difference]: Finished difference Result 282518 states and 504635 transitions. [2023-12-19 23:20:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 23:20:39,750 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2023-12-19 23:20:39,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:20:41,114 INFO L225 Difference]: With dead ends: 282518 [2023-12-19 23:20:41,115 INFO L226 Difference]: Without dead ends: 282085 [2023-12-19 23:20:41,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2023-12-19 23:20:41,228 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 3129 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 4097 mSolverCounterSat, 1125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3139 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 5222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1125 IncrementalHoareTripleChecker+Valid, 4097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:20:41,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3139 Valid, 1270 Invalid, 5222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1125 Valid, 4097 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 23:20:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282085 states. [2023-12-19 23:20:51,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282085 to 281023. [2023-12-19 23:20:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281023 states, 235070 states have (on average 1.617875526438933) internal successors, (380314), 234899 states have internal predecessors, (380314), 45777 states have call successors, (45777), 149 states have call predecessors, (45777), 175 states have return successors, (64306), 45998 states have call predecessors, (64306), 45769 states have call successors, (64306) [2023-12-19 23:20:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281023 states to 281023 states and 490397 transitions. [2023-12-19 23:20:53,879 INFO L78 Accepts]: Start accepts. Automaton has 281023 states and 490397 transitions. Word has length 131 [2023-12-19 23:20:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:20:53,879 INFO L495 AbstractCegarLoop]: Abstraction has 281023 states and 490397 transitions. [2023-12-19 23:20:53,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 23:20:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 281023 states and 490397 transitions. [2023-12-19 23:20:54,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 23:20:54,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:20:54,026 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:20:54,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 23:20:54,026 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:20:54,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:20:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash -757659225, now seen corresponding path program 1 times [2023-12-19 23:20:54,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:20:54,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926070686] [2023-12-19 23:20:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:20:54,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:20:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:20:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:20:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:20:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:20:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:20:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:20:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:20:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:20:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:20:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:20:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:20:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 23:20:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 23:20:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 23:20:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 23:20:54,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:20:54,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926070686] [2023-12-19 23:20:54,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926070686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:20:54,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:20:54,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 23:20:54,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202581294] [2023-12-19 23:20:54,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:20:54,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 23:20:54,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:20:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 23:20:54,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:20:54,429 INFO L87 Difference]: Start difference. First operand 281023 states and 490397 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14)