/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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 23:18:40,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 23:18:40,453 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 23:18:40,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 23:18:40,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 23:18:40,478 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 23:18:40,478 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 23:18:40,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 23:18:40,479 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 23:18:40,482 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 23:18:40,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 23:18:40,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 23:18:40,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 23:18:40,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 23:18:40,483 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 23:18:40,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 23:18:40,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 23:18:40,484 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 23:18:40,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 23:18:40,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 23:18:40,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 23:18:40,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 23:18:40,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 23:18:40,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 23:18:40,486 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 23:18:40,486 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 23:18:40,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 23:18:40,486 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 23:18:40,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 23:18:40,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 23:18:40,487 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 23:18:40,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 23:18:40,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:18:40,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 23:18:40,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 23:18:40,488 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 23:18:40,488 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 23:18:40,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 23:18:40,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 23:18:40,488 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 23:18:40,488 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 23:18:40,489 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 23:18:40,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 23:18:40,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 23:18:40,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 23:18:40,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 23:18:40,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 23:18:40,714 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 23:18:40,715 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 23:18:40,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2023-12-19 23:18:41,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 23:18:41,931 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 23:18:41,931 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2023-12-19 23:18:41,950 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98c687ee5/51ef340e2f5e4ec4ac0145fce2dd20d6/FLAG6b6acff0f [2023-12-19 23:18:41,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98c687ee5/51ef340e2f5e4ec4ac0145fce2dd20d6 [2023-12-19 23:18:41,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 23:18:41,968 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 23:18:41,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 23:18:41,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 23:18:41,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 23:18:41,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:18:41" (1/1) ... [2023-12-19 23:18:41,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5dc613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:41, skipping insertion in model container [2023-12-19 23:18:41,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:18:41" (1/1) ... [2023-12-19 23:18:42,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 23:18:42,277 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_product28.cil.c[8467,8480] [2023-12-19 23:18:42,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:18:42,478 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 23:18:42,484 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2023-12-19 23:18:42,485 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [97] [2023-12-19 23:18:42,485 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [445] [2023-12-19 23:18:42,485 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [454] [2023-12-19 23:18:42,486 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [471] [2023-12-19 23:18:42,486 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [871] [2023-12-19 23:18:42,486 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1092] [2023-12-19 23:18:42,486 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2167] [2023-12-19 23:18:42,486 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2303] [2023-12-19 23:18:42,486 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignForward_spec.i","") [2568] [2023-12-19 23:18:42,486 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2595] [2023-12-19 23:18:42,496 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_product28.cil.c[8467,8480] [2023-12-19 23:18:42,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:18:42,580 INFO L206 MainTranslator]: Completed translation [2023-12-19 23:18:42,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42 WrapperNode [2023-12-19 23:18:42,581 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 23:18:42,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 23:18:42,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 23:18:42,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 23:18:42,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,666 INFO L138 Inliner]: procedures = 128, calls = 196, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 849 [2023-12-19 23:18:42,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 23:18:42,667 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 23:18:42,667 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 23:18:42,667 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 23:18:42,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,685 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,701 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 23:18:42,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,716 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,727 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 23:18:42,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 23:18:42,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 23:18:42,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 23:18:42,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (1/1) ... [2023-12-19 23:18:42,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:18:42,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:18:42,821 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 23:18:42,842 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 23:18:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-19 23:18:42,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-19 23:18:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-19 23:18:42,848 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-19 23:18:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-19 23:18:42,848 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-19 23:18:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-19 23:18:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-19 23:18:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-19 23:18:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-19 23:18:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-19 23:18:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-19 23:18:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-19 23:18:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-19 23:18:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-19 23:18:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-19 23:18:42,850 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-19 23:18:42,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-19 23:18:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-19 23:18:42,852 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-19 23:18:42,852 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-19 23:18:42,853 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-19 23:18:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-19 23:18:42,853 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-19 23:18:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 23:18:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-19 23:18:42,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-19 23:18:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-19 23:18:42,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-19 23:18:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-19 23:18:42,853 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-19 23:18:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-19 23:18:42,853 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-19 23:18:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-19 23:18:42,853 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-19 23:18:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-19 23:18:42,854 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-19 23:18:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-19 23:18:42,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-19 23:18:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-19 23:18:42,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-19 23:18:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-19 23:18:42,854 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-19 23:18:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 23:18:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 23:18:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 23:18:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 23:18:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-19 23:18:42,854 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-19 23:18:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 23:18:42,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 23:18:43,021 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 23:18:43,023 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 23:18:43,638 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 23:18:43,668 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 23:18:43,669 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 23:18:43,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:18:43 BoogieIcfgContainer [2023-12-19 23:18:43,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 23:18:43,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 23:18:43,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 23:18:43,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 23:18:43,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:18:41" (1/3) ... [2023-12-19 23:18:43,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7a5ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:18:43, skipping insertion in model container [2023-12-19 23:18:43,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:18:42" (2/3) ... [2023-12-19 23:18:43,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7a5ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:18:43, skipping insertion in model container [2023-12-19 23:18:43,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:18:43" (3/3) ... [2023-12-19 23:18:43,674 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product28.cil.c [2023-12-19 23:18:43,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 23:18:43,685 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 23:18:43,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 23:18:43,733 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;@6bd732ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 23:18:43,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 23:18:43,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 229 states have (on average 1.5764192139737991) internal successors, (361), 233 states have internal predecessors, (361), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-19 23:18:43,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 23:18:43,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:43,759 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] [2023-12-19 23:18:43,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:43,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:43,762 INFO L85 PathProgramCache]: Analyzing trace with hash -413976073, now seen corresponding path program 1 times [2023-12-19 23:18:43,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:43,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585110098] [2023-12-19 23:18:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:43,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:18:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:18:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:18:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 23:18:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 23:18:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:18:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:18:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:18:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:18:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:18:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,330 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 23:18:44,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:44,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585110098] [2023-12-19 23:18:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585110098] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:18:44,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027578889] [2023-12-19 23:18:44,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:44,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:18:44,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:18:44,334 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 23:18:44,350 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 23:18:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:44,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 23:18:44,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:18:44,615 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 23:18:44,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:18:44,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027578889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:44,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:18:44,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2023-12-19 23:18:44,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086815090] [2023-12-19 23:18:44,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:44,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 23:18:44,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:44,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 23:18:44,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:18:44,642 INFO L87 Difference]: Start difference. First operand has 303 states, 229 states have (on average 1.5764192139737991) internal successors, (361), 233 states have internal predecessors, (361), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:44,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:44,689 INFO L93 Difference]: Finished difference Result 465 states and 692 transitions. [2023-12-19 23:18:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 23:18:44,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 98 [2023-12-19 23:18:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:44,699 INFO L225 Difference]: With dead ends: 465 [2023-12-19 23:18:44,699 INFO L226 Difference]: Without dead ends: 300 [2023-12-19 23:18:44,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:18:44,707 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:44,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 447 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:18:44,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-19 23:18:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-12-19 23:18:44,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 227 states have (on average 1.5594713656387664) internal successors, (354), 230 states have internal predecessors, (354), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-19 23:18:44,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 453 transitions. [2023-12-19 23:18:44,749 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 453 transitions. Word has length 98 [2023-12-19 23:18:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:44,750 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 453 transitions. [2023-12-19 23:18:44,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 453 transitions. [2023-12-19 23:18:44,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 23:18:44,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:44,753 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] [2023-12-19 23:18:44,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 23:18:44,960 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 23:18:44,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:44,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash 468515798, now seen corresponding path program 1 times [2023-12-19 23:18:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:44,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644315772] [2023-12-19 23:18:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:44,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:18:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:18:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:18:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:18:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 23:18:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:18:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:18:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:18:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:18:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:18:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,199 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 23:18:45,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644315772] [2023-12-19 23:18:45,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644315772] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:18:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216009918] [2023-12-19 23:18:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:45,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:18:45,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:18:45,203 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 23:18:45,207 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 23:18:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 23:18:45,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:18:45,467 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 23:18:45,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:18:45,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216009918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:45,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:18:45,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-19 23:18:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296467325] [2023-12-19 23:18:45,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:45,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:18:45,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:45,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:18:45,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:18:45,470 INFO L87 Difference]: Start difference. First operand 300 states and 453 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:45,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:45,523 INFO L93 Difference]: Finished difference Result 461 states and 679 transitions. [2023-12-19 23:18:45,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:18:45,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 99 [2023-12-19 23:18:45,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:45,528 INFO L225 Difference]: With dead ends: 461 [2023-12-19 23:18:45,528 INFO L226 Difference]: Without dead ends: 302 [2023-12-19 23:18:45,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:18:45,530 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 0 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:45,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 887 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:18:45,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-19 23:18:45,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2023-12-19 23:18:45,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 229 states have (on average 1.554585152838428) internal successors, (356), 232 states have internal predecessors, (356), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-19 23:18:45,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 455 transitions. [2023-12-19 23:18:45,551 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 455 transitions. Word has length 99 [2023-12-19 23:18:45,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:45,552 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 455 transitions. [2023-12-19 23:18:45,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 455 transitions. [2023-12-19 23:18:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 23:18:45,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:45,555 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] [2023-12-19 23:18:45,561 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 23:18:45,763 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 23:18:45,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:45,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash -483380743, now seen corresponding path program 1 times [2023-12-19 23:18:45,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:45,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938359558] [2023-12-19 23:18:45,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:45,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:18:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:18:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:18:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 23:18:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 23:18:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:18:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:18:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:18:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:18:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 23:18:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:45,963 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 23:18:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938359558] [2023-12-19 23:18:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938359558] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:18:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207362592] [2023-12-19 23:18:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:45,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:18:45,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:18:45,965 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 23:18:45,984 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 23:18:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 23:18:46,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:18:46,204 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 23:18:46,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:18:46,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207362592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:46,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:18:46,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-19 23:18:46,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009875182] [2023-12-19 23:18:46,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:46,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:18:46,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:18:46,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:18:46,206 INFO L87 Difference]: Start difference. First operand 302 states and 455 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:46,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:46,264 INFO L93 Difference]: Finished difference Result 630 states and 962 transitions. [2023-12-19 23:18:46,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:18:46,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2023-12-19 23:18:46,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:46,280 INFO L225 Difference]: With dead ends: 630 [2023-12-19 23:18:46,280 INFO L226 Difference]: Without dead ends: 350 [2023-12-19 23:18:46,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:18:46,282 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 95 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:46,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 850 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:18:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-12-19 23:18:46,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 345. [2023-12-19 23:18:46,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 261 states have (on average 1.5670498084291187) internal successors, (409), 264 states have internal predecessors, (409), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-19 23:18:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 530 transitions. [2023-12-19 23:18:46,297 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 530 transitions. Word has length 104 [2023-12-19 23:18:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:46,297 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 530 transitions. [2023-12-19 23:18:46,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 530 transitions. [2023-12-19 23:18:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-19 23:18:46,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:46,309 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] [2023-12-19 23:18:46,317 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 23:18:46,509 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 23:18:46,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:46,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1859197006, now seen corresponding path program 1 times [2023-12-19 23:18:46,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:46,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305618852] [2023-12-19 23:18:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:46,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:18:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:18:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:18:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 23:18:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 23:18:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:18:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:18:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:18:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:18:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 23:18:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,658 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 23:18:46,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:46,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305618852] [2023-12-19 23:18:46,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305618852] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:18:46,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071522214] [2023-12-19 23:18:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:46,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:18:46,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:18:46,660 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 23:18:46,663 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 23:18:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:46,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 23:18:46,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:18:46,932 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 23:18:46,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:18:46,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071522214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:46,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:18:46,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-19 23:18:46,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130475675] [2023-12-19 23:18:46,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:46,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:18:46,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:18:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:18:46,934 INFO L87 Difference]: Start difference. First operand 345 states and 530 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 23:18:46,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:46,999 INFO L93 Difference]: Finished difference Result 685 states and 1054 transitions. [2023-12-19 23:18:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:18:47,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 105 [2023-12-19 23:18:47,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:47,002 INFO L225 Difference]: With dead ends: 685 [2023-12-19 23:18:47,002 INFO L226 Difference]: Without dead ends: 347 [2023-12-19 23:18:47,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-19 23:18:47,007 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 8 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:47,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1729 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:18:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-19 23:18:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-12-19 23:18:47,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 262 states have (on average 1.5648854961832062) internal successors, (410), 266 states have internal predecessors, (410), 61 states have call successors, (61), 22 states have call predecessors, (61), 23 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2023-12-19 23:18:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 533 transitions. [2023-12-19 23:18:47,017 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 533 transitions. Word has length 105 [2023-12-19 23:18:47,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:47,018 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 533 transitions. [2023-12-19 23:18:47,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 23:18:47,018 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 533 transitions. [2023-12-19 23:18:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-19 23:18:47,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:47,019 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] [2023-12-19 23:18:47,028 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 23:18:47,220 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 23:18:47,220 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:47,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:47,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1335082445, now seen corresponding path program 1 times [2023-12-19 23:18:47,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:47,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209541059] [2023-12-19 23:18:47,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:47,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:18:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:18:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-19 23:18:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 23:18:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:18:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:18:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:18:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 23:18:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:18:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:18:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,382 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 23:18:47,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:47,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209541059] [2023-12-19 23:18:47,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209541059] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:18:47,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840850074] [2023-12-19 23:18:47,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:47,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:18:47,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:18:47,383 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 23:18:47,398 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 23:18:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:47,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 23:18:47,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:18:47,642 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 23:18:47,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:18:47,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840850074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:47,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:18:47,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-19 23:18:47,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759911426] [2023-12-19 23:18:47,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:47,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:18:47,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:47,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:18:47,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:18:47,643 INFO L87 Difference]: Start difference. First operand 347 states and 533 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 23:18:47,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:47,717 INFO L93 Difference]: Finished difference Result 687 states and 1059 transitions. [2023-12-19 23:18:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:18:47,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 106 [2023-12-19 23:18:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:47,720 INFO L225 Difference]: With dead ends: 687 [2023-12-19 23:18:47,720 INFO L226 Difference]: Without dead ends: 349 [2023-12-19 23:18:47,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 23:18:47,722 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 8 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:47,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1715 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:18:47,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-19 23:18:47,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2023-12-19 23:18:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 263 states have (on average 1.5627376425855513) internal successors, (411), 268 states have internal predecessors, (411), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2023-12-19 23:18:47,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 539 transitions. [2023-12-19 23:18:47,735 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 539 transitions. Word has length 106 [2023-12-19 23:18:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:47,735 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 539 transitions. [2023-12-19 23:18:47,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 23:18:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 539 transitions. [2023-12-19 23:18:47,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-19 23:18:47,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:47,737 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] [2023-12-19 23:18:47,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 23:18:47,942 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 23:18:47,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:47,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:47,943 INFO L85 PathProgramCache]: Analyzing trace with hash -755917868, now seen corresponding path program 1 times [2023-12-19 23:18:47,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:47,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292875862] [2023-12-19 23:18:47,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:47,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:18:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:18:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 23:18:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 23:18:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:18:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:18:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:18:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:18:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:18:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:18:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:48,052 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 23:18:48,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:48,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292875862] [2023-12-19 23:18:48,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292875862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:48,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:18:48,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 23:18:48,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918738402] [2023-12-19 23:18:48,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:48,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 23:18:48,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:48,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 23:18:48,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:18:48,054 INFO L87 Difference]: Start difference. First operand 349 states and 539 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 23:18:49,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:49,184 INFO L93 Difference]: Finished difference Result 741 states and 1152 transitions. [2023-12-19 23:18:49,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:18:49,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-12-19 23:18:49,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:49,187 INFO L225 Difference]: With dead ends: 741 [2023-12-19 23:18:49,187 INFO L226 Difference]: Without dead ends: 411 [2023-12-19 23:18:49,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:18:49,189 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 743 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:49,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 812 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 23:18:49,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-19 23:18:49,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 349. [2023-12-19 23:18:49,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 263 states have (on average 1.5627376425855513) internal successors, (411), 268 states have internal predecessors, (411), 61 states have call successors, (61), 22 states have call predecessors, (61), 24 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2023-12-19 23:18:49,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 538 transitions. [2023-12-19 23:18:49,213 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 538 transitions. Word has length 107 [2023-12-19 23:18:49,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:49,213 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 538 transitions. [2023-12-19 23:18:49,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 23:18:49,213 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 538 transitions. [2023-12-19 23:18:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 23:18:49,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:49,215 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] [2023-12-19 23:18:49,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 23:18:49,215 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:49,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:49,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1792395443, now seen corresponding path program 2 times [2023-12-19 23:18:49,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:49,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662840943] [2023-12-19 23:18:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:49,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:18:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:18:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:18:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 23:18:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 23:18:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:18:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:18:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:18:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:18:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:18:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:49,350 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 23:18:49,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:49,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662840943] [2023-12-19 23:18:49,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662840943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:49,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:18:49,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 23:18:49,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093167805] [2023-12-19 23:18:49,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:49,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 23:18:49,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 23:18:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:18:49,352 INFO L87 Difference]: Start difference. First operand 349 states and 538 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 23:18:50,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:50,366 INFO L93 Difference]: Finished difference Result 743 states and 1155 transitions. [2023-12-19 23:18:50,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:18:50,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2023-12-19 23:18:50,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:50,369 INFO L225 Difference]: With dead ends: 743 [2023-12-19 23:18:50,369 INFO L226 Difference]: Without dead ends: 413 [2023-12-19 23:18:50,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:18:50,371 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 739 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:50,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 812 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 23:18:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-19 23:18:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 351. [2023-12-19 23:18:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 264 states have (on average 1.5606060606060606) internal successors, (412), 270 states have internal predecessors, (412), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2023-12-19 23:18:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 541 transitions. [2023-12-19 23:18:50,391 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 541 transitions. Word has length 108 [2023-12-19 23:18:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:50,392 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 541 transitions. [2023-12-19 23:18:50,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 23:18:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 541 transitions. [2023-12-19 23:18:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 23:18:50,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:50,393 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] [2023-12-19 23:18:50,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 23:18:50,393 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:50,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:50,393 INFO L85 PathProgramCache]: Analyzing trace with hash 504202105, now seen corresponding path program 1 times [2023-12-19 23:18:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:50,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150853515] [2023-12-19 23:18:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:50,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:18:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:18:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:18:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 23:18:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:18:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:18:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:18:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:18:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:18:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 23:18:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:50,556 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 23:18:50,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:50,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150853515] [2023-12-19 23:18:50,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150853515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:50,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:18:50,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 23:18:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249778101] [2023-12-19 23:18:50,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:50,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 23:18:50,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:50,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 23:18:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:18:50,557 INFO L87 Difference]: Start difference. First operand 351 states and 541 transitions. Second operand has 11 states, 10 states have (on average 7.0) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 23:18:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:52,260 INFO L93 Difference]: Finished difference Result 741 states and 1150 transitions. [2023-12-19 23:18:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 23:18:52,261 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 109 [2023-12-19 23:18:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:52,263 INFO L225 Difference]: With dead ends: 741 [2023-12-19 23:18:52,263 INFO L226 Difference]: Without dead ends: 413 [2023-12-19 23:18:52,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-19 23:18:52,265 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 748 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 3186 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 3186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:52,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1163 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 3186 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 23:18:52,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-12-19 23:18:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 351. [2023-12-19 23:18:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 264 states have (on average 1.5606060606060606) internal successors, (412), 270 states have internal predecessors, (412), 61 states have call successors, (61), 22 states have call predecessors, (61), 25 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2023-12-19 23:18:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 540 transitions. [2023-12-19 23:18:52,280 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 540 transitions. Word has length 109 [2023-12-19 23:18:52,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:52,281 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 540 transitions. [2023-12-19 23:18:52,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.0) internal successors, (70), 8 states have internal predecessors, (70), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 23:18:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 540 transitions. [2023-12-19 23:18:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 23:18:52,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:52,282 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] [2023-12-19 23:18:52,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 23:18:52,282 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:52,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:52,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1153678138, now seen corresponding path program 2 times [2023-12-19 23:18:52,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:52,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898904785] [2023-12-19 23:18:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:52,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:18:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:18:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:18:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 23:18:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:18:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:18:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:18:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:18:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:18:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:18:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:52,447 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 23:18:52,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:52,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898904785] [2023-12-19 23:18:52,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898904785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:52,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:18:52,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 23:18:52,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887707413] [2023-12-19 23:18:52,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:52,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 23:18:52,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:52,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 23:18:52,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:18:52,449 INFO L87 Difference]: Start difference. First operand 351 states and 540 transitions. Second operand has 11 states, 10 states have (on average 7.1) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 23:18:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:54,008 INFO L93 Difference]: Finished difference Result 743 states and 1156 transitions. [2023-12-19 23:18:54,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 23:18:54,009 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 110 [2023-12-19 23:18:54,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:54,011 INFO L225 Difference]: With dead ends: 743 [2023-12-19 23:18:54,011 INFO L226 Difference]: Without dead ends: 415 [2023-12-19 23:18:54,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-19 23:18:54,012 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 744 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 3227 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:54,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1163 Invalid, 3459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3227 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 23:18:54,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-19 23:18:54,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 353. [2023-12-19 23:18:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 265 states have (on average 1.558490566037736) internal successors, (413), 272 states have internal predecessors, (413), 61 states have call successors, (61), 22 states have call predecessors, (61), 26 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2023-12-19 23:18:54,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 546 transitions. [2023-12-19 23:18:54,029 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 546 transitions. Word has length 110 [2023-12-19 23:18:54,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:54,030 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 546 transitions. [2023-12-19 23:18:54,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 23:18:54,030 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 546 transitions. [2023-12-19 23:18:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 23:18:54,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:54,032 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] [2023-12-19 23:18:54,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 23:18:54,032 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:54,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash 868232542, now seen corresponding path program 1 times [2023-12-19 23:18:54,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:54,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212228567] [2023-12-19 23:18:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:54,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:18:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:18:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:18:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 23:18:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 23:18:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:18:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:18:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:18:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 23:18:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 23:18:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,125 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 23:18:54,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:54,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212228567] [2023-12-19 23:18:54,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212228567] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:18:54,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654884734] [2023-12-19 23:18:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:54,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:18:54,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:18:54,127 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 23:18:54,140 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 23:18:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:54,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 23:18:54,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:18:54,363 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 23:18:54,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:18:54,415 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 23:18:54,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654884734] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:18:54,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:18:54,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-12-19 23:18:54,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671985356] [2023-12-19 23:18:54,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:18:54,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 23:18:54,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:54,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 23:18:54,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:18:54,418 INFO L87 Difference]: Start difference. First operand 353 states and 546 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-19 23:18:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:55,623 INFO L93 Difference]: Finished difference Result 884 states and 1441 transitions. [2023-12-19 23:18:55,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 23:18:55,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 111 [2023-12-19 23:18:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:55,626 INFO L225 Difference]: With dead ends: 884 [2023-12-19 23:18:55,627 INFO L226 Difference]: Without dead ends: 725 [2023-12-19 23:18:55,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:18:55,628 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1012 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:55,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1133 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:18:55,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2023-12-19 23:18:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 648. [2023-12-19 23:18:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 496 states have (on average 1.6189516129032258) internal successors, (803), 503 states have internal predecessors, (803), 125 states have call successors, (125), 22 states have call predecessors, (125), 26 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2023-12-19 23:18:55,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1074 transitions. [2023-12-19 23:18:55,653 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1074 transitions. Word has length 111 [2023-12-19 23:18:55,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:55,654 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 1074 transitions. [2023-12-19 23:18:55,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-19 23:18:55,654 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1074 transitions. [2023-12-19 23:18:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 23:18:55,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:55,657 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] [2023-12-19 23:18:55,680 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 23:18:55,863 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 23:18:55,864 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:55,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:55,865 INFO L85 PathProgramCache]: Analyzing trace with hash 593859387, now seen corresponding path program 1 times [2023-12-19 23:18:55,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:55,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411826641] [2023-12-19 23:18:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:55,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:18:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:18:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:18:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:18:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:18:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:18:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 23:18:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 23:18:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:18:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 23:18:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:55,943 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 23:18:55,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:55,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411826641] [2023-12-19 23:18:55,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411826641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:55,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:18:55,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:18:55,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628960773] [2023-12-19 23:18:55,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:55,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:18:55,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:18:55,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:18:55,945 INFO L87 Difference]: Start difference. First operand 648 states and 1074 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:56,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:56,866 INFO L93 Difference]: Finished difference Result 1595 states and 2710 transitions. [2023-12-19 23:18:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:18:56,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2023-12-19 23:18:56,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:56,871 INFO L225 Difference]: With dead ends: 1595 [2023-12-19 23:18:56,871 INFO L226 Difference]: Without dead ends: 1007 [2023-12-19 23:18:56,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:18:56,873 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 826 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:56,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 602 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:18:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2023-12-19 23:18:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 940. [2023-12-19 23:18:56,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 724 states have (on average 1.6298342541436464) internal successors, (1180), 731 states have internal predecessors, (1180), 189 states have call successors, (189), 22 states have call predecessors, (189), 26 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2023-12-19 23:18:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1589 transitions. [2023-12-19 23:18:56,905 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1589 transitions. Word has length 117 [2023-12-19 23:18:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:56,906 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1589 transitions. [2023-12-19 23:18:56,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1589 transitions. [2023-12-19 23:18:56,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-19 23:18:56,909 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:56,909 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] [2023-12-19 23:18:56,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 23:18:56,910 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:56,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash -803479539, now seen corresponding path program 1 times [2023-12-19 23:18:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:56,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802755174] [2023-12-19 23:18:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:56,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:18:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:18:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:18:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 23:18:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:18:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:18:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:18:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 23:18:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 23:18:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 23:18:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:56,977 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 23:18:56,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:56,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802755174] [2023-12-19 23:18:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802755174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:56,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:18:56,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:18:56,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015305178] [2023-12-19 23:18:56,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:56,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:18:56,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:56,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:18:56,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:18:56,979 INFO L87 Difference]: Start difference. First operand 940 states and 1589 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:57,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:57,835 INFO L93 Difference]: Finished difference Result 2292 states and 3937 transitions. [2023-12-19 23:18:57,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:18:57,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-12-19 23:18:57,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:57,842 INFO L225 Difference]: With dead ends: 2292 [2023-12-19 23:18:57,842 INFO L226 Difference]: Without dead ends: 1462 [2023-12-19 23:18:57,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:18:57,845 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 824 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:57,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 582 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:18:57,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-12-19 23:18:57,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1395. [2023-12-19 23:18:57,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1084 states have (on average 1.636531365313653) internal successors, (1774), 1091 states have internal predecessors, (1774), 284 states have call successors, (284), 22 states have call predecessors, (284), 26 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2023-12-19 23:18:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2373 transitions. [2023-12-19 23:18:57,927 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2373 transitions. Word has length 118 [2023-12-19 23:18:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:57,927 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 2373 transitions. [2023-12-19 23:18:57,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2373 transitions. [2023-12-19 23:18:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 23:18:57,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:57,933 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] [2023-12-19 23:18:57,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 23:18:57,933 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:57,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1159932381, now seen corresponding path program 1 times [2023-12-19 23:18:57,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:57,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288316314] [2023-12-19 23:18:57,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:57,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:57,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:57,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:57,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:57,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:18:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:57,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:18:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:18:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:18:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:18:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:18:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:18:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:18:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 23:18:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 23:18:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,006 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 23:18:58,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:58,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288316314] [2023-12-19 23:18:58,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288316314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:58,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:18:58,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:18:58,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248537331] [2023-12-19 23:18:58,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:58,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:18:58,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:58,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:18:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:18:58,008 INFO L87 Difference]: Start difference. First operand 1395 states and 2373 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:58,843 INFO L93 Difference]: Finished difference Result 3310 states and 5749 transitions. [2023-12-19 23:18:58,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:18:58,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2023-12-19 23:18:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:58,853 INFO L225 Difference]: With dead ends: 3310 [2023-12-19 23:18:58,853 INFO L226 Difference]: Without dead ends: 2145 [2023-12-19 23:18:58,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:18:58,857 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 822 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:58,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 570 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:18:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2023-12-19 23:18:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2078. [2023-12-19 23:18:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 1644 states have (on average 1.6423357664233578) internal successors, (2700), 1651 states have internal predecessors, (2700), 407 states have call successors, (407), 22 states have call predecessors, (407), 26 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2023-12-19 23:18:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 3561 transitions. [2023-12-19 23:18:58,929 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 3561 transitions. Word has length 119 [2023-12-19 23:18:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:18:58,929 INFO L495 AbstractCegarLoop]: Abstraction has 2078 states and 3561 transitions. [2023-12-19 23:18:58,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 3561 transitions. [2023-12-19 23:18:58,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 23:18:58,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:18:58,936 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 23:18:58,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 23:18:58,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:18:58,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:18:58,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2092714002, now seen corresponding path program 1 times [2023-12-19 23:18:58,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:18:58,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813337714] [2023-12-19 23:18:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:18:58,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:18:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:18:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:18:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:18:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:18:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:18:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:18:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:59,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:18:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:59,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:18:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:59,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:18:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:59,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:18:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:18:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:59,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:18:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:59,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:18:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:18:59,020 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 23:18:59,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:18:59,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813337714] [2023-12-19 23:18:59,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813337714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:18:59,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:18:59,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:18:59,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952115927] [2023-12-19 23:18:59,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:18:59,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:18:59,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:18:59,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:18:59,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:18:59,021 INFO L87 Difference]: Start difference. First operand 2078 states and 3561 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:18:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:18:59,899 INFO L93 Difference]: Finished difference Result 4880 states and 8554 transitions. [2023-12-19 23:18:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:18:59,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2023-12-19 23:18:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:18:59,913 INFO L225 Difference]: With dead ends: 4880 [2023-12-19 23:18:59,913 INFO L226 Difference]: Without dead ends: 3229 [2023-12-19 23:18:59,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:18:59,919 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 820 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:18:59,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 571 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:18:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2023-12-19 23:18:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 3162. [2023-12-19 23:19:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3162 states, 2549 states have (on average 1.6461357395056886) internal successors, (4196), 2556 states have internal predecessors, (4196), 586 states have call successors, (586), 22 states have call predecessors, (586), 26 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2023-12-19 23:19:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 5441 transitions. [2023-12-19 23:19:00,012 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 5441 transitions. Word has length 120 [2023-12-19 23:19:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:00,012 INFO L495 AbstractCegarLoop]: Abstraction has 3162 states and 5441 transitions. [2023-12-19 23:19:00,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 5441 transitions. [2023-12-19 23:19:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-19 23:19:00,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:00,023 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 23:19:00,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 23:19:00,023 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:00,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:00,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1525973785, now seen corresponding path program 1 times [2023-12-19 23:19:00,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:00,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672041673] [2023-12-19 23:19:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:00,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 23:19:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:19:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:19:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:19:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:19:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:19:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 23:19:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:00,087 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 23:19:00,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:00,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672041673] [2023-12-19 23:19:00,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672041673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:00,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:00,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:19:00,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598871104] [2023-12-19 23:19:00,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:00,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:19:00,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:00,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:19:00,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:19:00,090 INFO L87 Difference]: Start difference. First operand 3162 states and 5441 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:00,960 INFO L93 Difference]: Finished difference Result 7711 states and 13566 transitions. [2023-12-19 23:19:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:19:00,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2023-12-19 23:19:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:00,982 INFO L225 Difference]: With dead ends: 7711 [2023-12-19 23:19:00,982 INFO L226 Difference]: Without dead ends: 5199 [2023-12-19 23:19:00,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:19:00,991 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 818 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:00,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 594 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:19:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5199 states. [2023-12-19 23:19:01,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5199 to 5132. [2023-12-19 23:19:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5132 states, 4143 states have (on average 1.6381848901762008) internal successors, (6787), 4150 states have internal predecessors, (6787), 962 states have call successors, (962), 22 states have call predecessors, (962), 26 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2023-12-19 23:19:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 8828 transitions. [2023-12-19 23:19:01,186 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 8828 transitions. Word has length 121 [2023-12-19 23:19:01,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:01,186 INFO L495 AbstractCegarLoop]: Abstraction has 5132 states and 8828 transitions. [2023-12-19 23:19:01,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 8828 transitions. [2023-12-19 23:19:01,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-19 23:19:01,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:01,201 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 23:19:01,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 23:19:01,201 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:01,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:01,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2080387762, now seen corresponding path program 1 times [2023-12-19 23:19:01,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:01,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19580357] [2023-12-19 23:19:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:01,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:19:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:19:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:19:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:19:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 23:19:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:19:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 23:19:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:01,271 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 23:19:01,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:01,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19580357] [2023-12-19 23:19:01,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19580357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:01,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:01,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:19:01,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111003438] [2023-12-19 23:19:01,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:01,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:19:01,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:01,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:19:01,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:19:01,272 INFO L87 Difference]: Start difference. First operand 5132 states and 8828 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:02,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:02,202 INFO L93 Difference]: Finished difference Result 12692 states and 22314 transitions. [2023-12-19 23:19:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:19:02,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-12-19 23:19:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:02,243 INFO L225 Difference]: With dead ends: 12692 [2023-12-19 23:19:02,243 INFO L226 Difference]: Without dead ends: 8576 [2023-12-19 23:19:02,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:19:02,253 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 816 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:02,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 581 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:19:02,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8576 states. [2023-12-19 23:19:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8576 to 8509. [2023-12-19 23:19:02,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8509 states, 6914 states have (on average 1.6358113971651722) internal successors, (11310), 6921 states have internal predecessors, (11310), 1568 states have call successors, (1568), 22 states have call predecessors, (1568), 26 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2023-12-19 23:19:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8509 states to 8509 states and 14641 transitions. [2023-12-19 23:19:02,520 INFO L78 Accepts]: Start accepts. Automaton has 8509 states and 14641 transitions. Word has length 122 [2023-12-19 23:19:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:02,520 INFO L495 AbstractCegarLoop]: Abstraction has 8509 states and 14641 transitions. [2023-12-19 23:19:02,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:02,521 INFO L276 IsEmpty]: Start isEmpty. Operand 8509 states and 14641 transitions. [2023-12-19 23:19:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 23:19:02,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:02,542 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 23:19:02,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 23:19:02,543 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:02,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:02,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1929376667, now seen corresponding path program 1 times [2023-12-19 23:19:02,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:02,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985095618] [2023-12-19 23:19:02,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:02,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:19:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:19:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 23:19:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:19:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:19:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 23:19:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 23:19:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:02,608 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 23:19:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:02,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985095618] [2023-12-19 23:19:02,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985095618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:02,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:02,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:19:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839108663] [2023-12-19 23:19:02,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:02,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:19:02,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:19:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:19:02,610 INFO L87 Difference]: Start difference. First operand 8509 states and 14641 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:03,659 INFO L93 Difference]: Finished difference Result 22044 states and 38713 transitions. [2023-12-19 23:19:03,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:19:03,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2023-12-19 23:19:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:03,702 INFO L225 Difference]: With dead ends: 22044 [2023-12-19 23:19:03,703 INFO L226 Difference]: Without dead ends: 14960 [2023-12-19 23:19:03,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:19:03,720 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 814 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:03,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 596 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:19:03,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14960 states. [2023-12-19 23:19:04,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14960 to 14893. [2023-12-19 23:19:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14893 states, 12095 states have (on average 1.6260438197602316) internal successors, (19667), 12102 states have internal predecessors, (19667), 2771 states have call successors, (2771), 22 states have call predecessors, (2771), 26 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2023-12-19 23:19:04,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14893 states to 14893 states and 25548 transitions. [2023-12-19 23:19:04,179 INFO L78 Accepts]: Start accepts. Automaton has 14893 states and 25548 transitions. Word has length 123 [2023-12-19 23:19:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:04,179 INFO L495 AbstractCegarLoop]: Abstraction has 14893 states and 25548 transitions. [2023-12-19 23:19:04,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:04,179 INFO L276 IsEmpty]: Start isEmpty. Operand 14893 states and 25548 transitions. [2023-12-19 23:19:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-19 23:19:04,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:04,212 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 23:19:04,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 23:19:04,212 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:04,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1294665267, now seen corresponding path program 1 times [2023-12-19 23:19:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:04,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621683946] [2023-12-19 23:19:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:04,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:19:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:19:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:19:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:19:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 23:19:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 23:19:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 23:19:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:04,281 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 23:19:04,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:04,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621683946] [2023-12-19 23:19:04,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621683946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:04,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:04,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:19:04,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893045258] [2023-12-19 23:19:04,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:04,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:19:04,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:04,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:19:04,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:19:04,283 INFO L87 Difference]: Start difference. First operand 14893 states and 25548 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:05,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:05,625 INFO L93 Difference]: Finished difference Result 39403 states and 69099 transitions. [2023-12-19 23:19:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:19:05,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2023-12-19 23:19:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:05,718 INFO L225 Difference]: With dead ends: 39403 [2023-12-19 23:19:05,718 INFO L226 Difference]: Without dead ends: 26527 [2023-12-19 23:19:05,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:19:05,745 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 812 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:05,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 571 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:19:05,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26527 states. [2023-12-19 23:19:06,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26527 to 26460. [2023-12-19 23:19:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26460 states, 21623 states have (on average 1.6219765989918142) internal successors, (35072), 21630 states have internal predecessors, (35072), 4810 states have call successors, (4810), 22 states have call predecessors, (4810), 26 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2023-12-19 23:19:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26460 states to 26460 states and 45305 transitions. [2023-12-19 23:19:06,575 INFO L78 Accepts]: Start accepts. Automaton has 26460 states and 45305 transitions. Word has length 124 [2023-12-19 23:19:06,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:06,575 INFO L495 AbstractCegarLoop]: Abstraction has 26460 states and 45305 transitions. [2023-12-19 23:19:06,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:06,575 INFO L276 IsEmpty]: Start isEmpty. Operand 26460 states and 45305 transitions. [2023-12-19 23:19:06,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 23:19:06,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:06,609 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 23:19:06,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 23:19:06,609 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:06,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1751403395, now seen corresponding path program 1 times [2023-12-19 23:19:06,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:06,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249465236] [2023-12-19 23:19:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:06,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:19:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:19:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:19:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:19:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 23:19:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 23:19:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 23:19:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:06,770 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 23:19:06,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:06,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249465236] [2023-12-19 23:19:06,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249465236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:06,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:06,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:19:06,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997636744] [2023-12-19 23:19:06,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:06,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:19:06,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:06,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:19:06,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:19:06,772 INFO L87 Difference]: Start difference. First operand 26460 states and 45305 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:08,514 INFO L93 Difference]: Finished difference Result 72015 states and 125523 transitions. [2023-12-19 23:19:08,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:19:08,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2023-12-19 23:19:08,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:08,667 INFO L225 Difference]: With dead ends: 72015 [2023-12-19 23:19:08,667 INFO L226 Difference]: Without dead ends: 48287 [2023-12-19 23:19:08,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:19:08,726 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 810 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:08,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 575 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:19:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48287 states. [2023-12-19 23:19:10,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48287 to 48220. [2023-12-19 23:19:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48220 states, 39668 states have (on average 1.6165170918624585) internal successors, (64124), 39675 states have internal predecessors, (64124), 8525 states have call successors, (8525), 22 states have call predecessors, (8525), 26 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2023-12-19 23:19:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48220 states to 48220 states and 82319 transitions. [2023-12-19 23:19:10,399 INFO L78 Accepts]: Start accepts. Automaton has 48220 states and 82319 transitions. Word has length 125 [2023-12-19 23:19:10,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:10,399 INFO L495 AbstractCegarLoop]: Abstraction has 48220 states and 82319 transitions. [2023-12-19 23:19:10,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 48220 states and 82319 transitions. [2023-12-19 23:19:10,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 23:19:10,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:10,429 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 23:19:10,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 23:19:10,430 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:10,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:10,430 INFO L85 PathProgramCache]: Analyzing trace with hash -47176237, now seen corresponding path program 1 times [2023-12-19 23:19:10,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:10,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231097297] [2023-12-19 23:19:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:10,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:19:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:19:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:19:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:19:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:19:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 23:19:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 23:19:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:10,496 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 23:19:10,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:10,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231097297] [2023-12-19 23:19:10,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231097297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:10,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:10,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:19:10,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650211768] [2023-12-19 23:19:10,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:10,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:19:10,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:10,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:19:10,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:19:10,498 INFO L87 Difference]: Start difference. First operand 48220 states and 82319 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:12,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:12,836 INFO L93 Difference]: Finished difference Result 89734 states and 156887 transitions. [2023-12-19 23:19:12,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:19:12,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2023-12-19 23:19:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:13,116 INFO L225 Difference]: With dead ends: 89734 [2023-12-19 23:19:13,116 INFO L226 Difference]: Without dead ends: 89575 [2023-12-19 23:19:13,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:19:13,158 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 808 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:13,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 572 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:19:13,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89575 states. [2023-12-19 23:19:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89575 to 89508. [2023-12-19 23:19:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89508 states, 74157 states have (on average 1.6094771902854754) internal successors, (119354), 74164 states have internal predecessors, (119354), 15324 states have call successors, (15324), 22 states have call predecessors, (15324), 26 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2023-12-19 23:19:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89508 states to 89508 states and 152193 transitions. [2023-12-19 23:19:15,849 INFO L78 Accepts]: Start accepts. Automaton has 89508 states and 152193 transitions. Word has length 126 [2023-12-19 23:19:15,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:15,850 INFO L495 AbstractCegarLoop]: Abstraction has 89508 states and 152193 transitions. [2023-12-19 23:19:15,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:15,850 INFO L276 IsEmpty]: Start isEmpty. Operand 89508 states and 152193 transitions. [2023-12-19 23:19:15,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-19 23:19:15,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:15,893 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 23:19:15,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 23:19:15,894 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:15,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:15,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1341870980, now seen corresponding path program 1 times [2023-12-19 23:19:15,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:15,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307041493] [2023-12-19 23:19:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:15,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:19:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:19:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:19:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:19:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:19:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:19:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 23:19:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:16,198 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 23:19:16,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:16,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307041493] [2023-12-19 23:19:16,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307041493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:16,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:16,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-19 23:19:16,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420677063] [2023-12-19 23:19:16,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:16,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-19 23:19:16,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:16,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-19 23:19:16,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2023-12-19 23:19:16,199 INFO L87 Difference]: Start difference. First operand 89508 states and 152193 transitions. Second operand has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 11 states have internal predecessors, (83), 6 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-12-19 23:19:23,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:23,732 INFO L93 Difference]: Finished difference Result 178739 states and 315851 transitions. [2023-12-19 23:19:23,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-19 23:19:23,733 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 11 states have internal predecessors, (83), 6 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 127 [2023-12-19 23:19:23,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:24,562 INFO L225 Difference]: With dead ends: 178739 [2023-12-19 23:19:24,562 INFO L226 Difference]: Without dead ends: 178587 [2023-12-19 23:19:24,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=579, Invalid=2073, Unknown=0, NotChecked=0, Total=2652 [2023-12-19 23:19:24,624 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 3213 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 6295 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3213 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 7309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 6295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:24,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3213 Valid, 2264 Invalid, 7309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 6295 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 23:19:24,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178587 states. [2023-12-19 23:19:30,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178587 to 178282. [2023-12-19 23:19:30,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178282 states, 147773 states have (on average 1.6104430443991797) internal successors, (237980), 147677 states have internal predecessors, (237980), 30443 states have call successors, (30443), 59 states have call predecessors, (30443), 65 states have return successors, (38094), 30551 states have call predecessors, (38094), 30440 states have call successors, (38094) [2023-12-19 23:19:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178282 states to 178282 states and 306517 transitions. [2023-12-19 23:19:31,618 INFO L78 Accepts]: Start accepts. Automaton has 178282 states and 306517 transitions. Word has length 127 [2023-12-19 23:19:31,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:31,618 INFO L495 AbstractCegarLoop]: Abstraction has 178282 states and 306517 transitions. [2023-12-19 23:19:31,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 11 states have internal predecessors, (83), 6 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-12-19 23:19:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 178282 states and 306517 transitions. [2023-12-19 23:19:31,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 23:19:31,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:31,940 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 23:19:31,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 23:19:31,940 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:31,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:31,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1144723784, now seen corresponding path program 1 times [2023-12-19 23:19:31,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:31,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76505719] [2023-12-19 23:19:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:31,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:19:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:19:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:19:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:19:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:19:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 23:19:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 23:19:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:32,142 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 23:19:32,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:32,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76505719] [2023-12-19 23:19:32,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76505719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:32,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:32,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 23:19:32,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132535110] [2023-12-19 23:19:32,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:32,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 23:19:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:32,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 23:19:32,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:19:32,144 INFO L87 Difference]: Start difference. First operand 178282 states and 306517 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 8 states have internal predecessors, (84), 5 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-19 23:19:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:37,646 INFO L93 Difference]: Finished difference Result 179263 states and 314505 transitions. [2023-12-19 23:19:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 23:19:37,647 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 8 states have internal predecessors, (84), 5 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 128 [2023-12-19 23:19:37,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:38,523 INFO L225 Difference]: With dead ends: 179263 [2023-12-19 23:19:38,524 INFO L226 Difference]: Without dead ends: 178583 [2023-12-19 23:19:38,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2023-12-19 23:19:38,588 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1573 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 3609 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 4127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 3609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:38,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 1253 Invalid, 4127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 3609 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 23:19:38,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178583 states. [2023-12-19 23:19:44,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178583 to 178379. [2023-12-19 23:19:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178379 states, 147842 states have (on average 1.6103407691995508) internal successors, (238076), 147751 states have internal predecessors, (238076), 30468 states have call successors, (30468), 62 states have call predecessors, (30468), 68 states have return successors, (38128), 30574 states have call predecessors, (38128), 30465 states have call successors, (38128) [2023-12-19 23:19:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178379 states to 178379 states and 306672 transitions. [2023-12-19 23:19:45,803 INFO L78 Accepts]: Start accepts. Automaton has 178379 states and 306672 transitions. Word has length 128 [2023-12-19 23:19:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:19:45,803 INFO L495 AbstractCegarLoop]: Abstraction has 178379 states and 306672 transitions. [2023-12-19 23:19:45,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 8 states have internal predecessors, (84), 5 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-19 23:19:45,806 INFO L276 IsEmpty]: Start isEmpty. Operand 178379 states and 306672 transitions. [2023-12-19 23:19:45,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 23:19:45,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:19:45,885 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 23:19:45,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 23:19:45,885 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:19:45,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:19:45,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1040105018, now seen corresponding path program 1 times [2023-12-19 23:19:45,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:19:45,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548737014] [2023-12-19 23:19:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:19:45,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:19:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:19:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:19:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:19:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:19:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:19:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:19:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:19:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:19:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:19:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:19:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:19:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 23:19:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 23:19:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:19:45,980 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 23:19:45,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:19:45,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548737014] [2023-12-19 23:19:45,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548737014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:19:45,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:19:45,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 23:19:45,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981355028] [2023-12-19 23:19:45,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:19:45,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 23:19:45,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:19:45,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 23:19:45,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:19:45,982 INFO L87 Difference]: Start difference. First operand 178379 states and 306672 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:19:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:19:53,594 INFO L93 Difference]: Finished difference Result 268551 states and 480341 transitions. [2023-12-19 23:19:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 23:19:53,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2023-12-19 23:19:53,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:19:54,887 INFO L225 Difference]: With dead ends: 268551 [2023-12-19 23:19:54,887 INFO L226 Difference]: Without dead ends: 268211 [2023-12-19 23:19:54,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-12-19 23:19:54,992 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 2124 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 2808 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 3448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 2808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:19:54,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2134 Valid, 1068 Invalid, 3448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 2808 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 23:19:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268211 states. [2023-12-19 23:20:04,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268211 to 267708. [2023-12-19 23:20:04,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267708 states, 221860 states have (on average 1.6104119715135672) internal successors, (357286), 221685 states have internal predecessors, (357286), 45689 states have call successors, (45689), 141 states have call predecessors, (45689), 158 states have return successors, (64196), 45905 states have call predecessors, (64196), 45681 states have call successors, (64196) [2023-12-19 23:20:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267708 states to 267708 states and 467171 transitions. [2023-12-19 23:20:06,503 INFO L78 Accepts]: Start accepts. Automaton has 267708 states and 467171 transitions. Word has length 128 [2023-12-19 23:20:06,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:20:06,503 INFO L495 AbstractCegarLoop]: Abstraction has 267708 states and 467171 transitions. [2023-12-19 23:20:06,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:20:06,503 INFO L276 IsEmpty]: Start isEmpty. Operand 267708 states and 467171 transitions. [2023-12-19 23:20:06,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 23:20:06,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:20:06,636 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 23:20:06,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 23:20:06,637 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:20:06,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:20:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash -347003321, now seen corresponding path program 1 times [2023-12-19 23:20:06,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:20:06,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605918705] [2023-12-19 23:20:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:20:06,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:20:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:20:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:20:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:20:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:20:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:20:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:20:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:20:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:20:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:20:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:20:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:20:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 23:20:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 23:20:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:20:06,817 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 23:20:06,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:20:06,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605918705] [2023-12-19 23:20:06,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605918705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:20:06,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:20:06,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 23:20:06,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970805378] [2023-12-19 23:20:06,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:20:06,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 23:20:06,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:20:06,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 23:20:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:20:06,819 INFO L87 Difference]: Start difference. First operand 267708 states and 467171 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 23:20:15,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:20:15,067 INFO L93 Difference]: Finished difference Result 271361 states and 482339 transitions. [2023-12-19 23:20:15,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 23:20:15,067 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2023-12-19 23:20:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted.