/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_spec6_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 23:22:38,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 23:22:38,453 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 23:22:38,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 23:22:38,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 23:22:38,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 23:22:38,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 23:22:38,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 23:22:38,478 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 23:22:38,479 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 23:22:38,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 23:22:38,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 23:22:38,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 23:22:38,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 23:22:38,480 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 23:22:38,481 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 23:22:38,481 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 23:22:38,481 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 23:22:38,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 23:22:38,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 23:22:38,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 23:22:38,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 23:22:38,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 23:22:38,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 23:22:38,486 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 23:22:38,486 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 23:22:38,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 23:22:38,487 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 23:22:38,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 23:22:38,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 23:22:38,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 23:22:38,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 23:22:38,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:22:38,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 23:22:38,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 23:22:38,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 23:22:38,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 23:22:38,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 23:22:38,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 23:22:38,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 23:22:38,490 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 23:22:38,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 23:22:38,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 23:22:38,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 23:22:38,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 23:22:38,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 23:22:38,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 23:22:38,749 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 23:22:38,749 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 23:22:38,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product30.cil.c [2023-12-19 23:22:40,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 23:22:40,351 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 23:22:40,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product30.cil.c [2023-12-19 23:22:40,382 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5008118fc/1362e0a61de04362ba9396dc09359cbb/FLAGa004ceba6 [2023-12-19 23:22:40,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5008118fc/1362e0a61de04362ba9396dc09359cbb [2023-12-19 23:22:40,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 23:22:40,402 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 23:22:40,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 23:22:40,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 23:22:40,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 23:22:40,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:22:40" (1/1) ... [2023-12-19 23:22:40,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c38691f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:40, skipping insertion in model container [2023-12-19 23:22:40,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:22:40" (1/1) ... [2023-12-19 23:22:40,472 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 23:22:41,071 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_spec6_product30.cil.c[64728,64741] [2023-12-19 23:22:41,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:22:41,094 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 23:22:41,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2023-12-19 23:22:41,104 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [273] [2023-12-19 23:22:41,104 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [322] [2023-12-19 23:22:41,105 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1402] [2023-12-19 23:22:41,105 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptDecrypt_spec.i","") [1814] [2023-12-19 23:22:41,105 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1864] [2023-12-19 23:22:41,105 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1881] [2023-12-19 23:22:41,106 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2245] [2023-12-19 23:22:41,106 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2381] [2023-12-19 23:22:41,106 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2747] [2023-12-19 23:22:41,106 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3022] [2023-12-19 23:22:41,223 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_spec6_product30.cil.c[64728,64741] [2023-12-19 23:22:41,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:22:41,255 INFO L206 MainTranslator]: Completed translation [2023-12-19 23:22:41,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41 WrapperNode [2023-12-19 23:22:41,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 23:22:41,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 23:22:41,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 23:22:41,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 23:22:41,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,301 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,369 INFO L138 Inliner]: procedures = 132, calls = 209, calls flagged for inlining = 61, calls inlined = 51, statements flattened = 924 [2023-12-19 23:22:41,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 23:22:41,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 23:22:41,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 23:22:41,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 23:22:41,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,391 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,436 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 23:22:41,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,461 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 23:22:41,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 23:22:41,475 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 23:22:41,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 23:22:41,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (1/1) ... [2023-12-19 23:22:41,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:22:41,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:22:41,521 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 23:22:41,555 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 23:22:41,562 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-19 23:22:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-19 23:22:41,562 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-19 23:22:41,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-19 23:22:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-19 23:22:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-19 23:22:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-19 23:22:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-19 23:22:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-19 23:22:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-19 23:22:41,563 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-19 23:22:41,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-19 23:22:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-19 23:22:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-19 23:22:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-19 23:22:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-19 23:22:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-19 23:22:41,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-19 23:22:41,564 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-19 23:22:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-19 23:22:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-19 23:22:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-19 23:22:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-19 23:22:41,565 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-19 23:22:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 23:22:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-19 23:22:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-19 23:22:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-19 23:22:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-19 23:22:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-19 23:22:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-19 23:22:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-19 23:22:41,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-19 23:22:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-19 23:22:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-19 23:22:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-19 23:22:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-19 23:22:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-19 23:22:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-19 23:22:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-19 23:22:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-19 23:22:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-19 23:22:41,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-19 23:22:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-19 23:22:41,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-19 23:22:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 23:22:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 23:22:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 23:22:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 23:22:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-19 23:22:41,569 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-19 23:22:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 23:22:41,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 23:22:41,778 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 23:22:41,782 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 23:22:42,503 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 23:22:42,575 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 23:22:42,576 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 23:22:42,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:22:42 BoogieIcfgContainer [2023-12-19 23:22:42,576 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 23:22:42,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 23:22:42,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 23:22:42,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 23:22:42,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:22:40" (1/3) ... [2023-12-19 23:22:42,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0dc36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:22:42, skipping insertion in model container [2023-12-19 23:22:42,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:22:41" (2/3) ... [2023-12-19 23:22:42,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0dc36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:22:42, skipping insertion in model container [2023-12-19 23:22:42,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:22:42" (3/3) ... [2023-12-19 23:22:42,585 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product30.cil.c [2023-12-19 23:22:42,601 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 23:22:42,602 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 23:22:42,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 23:22:42,673 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;@2de9adde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 23:22:42,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 23:22:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 244 states have (on average 1.569672131147541) internal successors, (383), 248 states have internal predecessors, (383), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-19 23:22:42,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 23:22:42,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:22:42,707 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:22:42,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:22:42,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:22:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash 792826018, now seen corresponding path program 1 times [2023-12-19 23:22:42,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:22:42,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338937307] [2023-12-19 23:22:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:42,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:22:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:22:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:22:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:22:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:22:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:22:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:22:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 23:22:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 23:22:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 23:22:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:22:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:22:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:22:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:22:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:22:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:22:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:22:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 23:22:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:22:43,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:22:43,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338937307] [2023-12-19 23:22:43,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338937307] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:22:43,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067623752] [2023-12-19 23:22:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:43,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:22:43,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:22:43,521 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 23:22:43,536 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 23:22:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:43,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 23:22:43,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:22:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-19 23:22:43,942 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:22:43,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067623752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:22:43,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:22:43,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-19 23:22:43,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438504779] [2023-12-19 23:22:43,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:22:43,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 23:22:43,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:22:43,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 23:22:43,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:22:44,001 INFO L87 Difference]: Start difference. First operand has 324 states, 244 states have (on average 1.569672131147541) internal successors, (383), 248 states have internal predecessors, (383), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:22:44,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:22:44,081 INFO L93 Difference]: Finished difference Result 503 states and 749 transitions. [2023-12-19 23:22:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 23:22:44,090 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 119 [2023-12-19 23:22:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:22:44,103 INFO L225 Difference]: With dead ends: 503 [2023-12-19 23:22:44,103 INFO L226 Difference]: Without dead ends: 321 [2023-12-19 23:22:44,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:22:44,119 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:22:44,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 475 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:22:44,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-12-19 23:22:44,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2023-12-19 23:22:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 242 states have (on average 1.5537190082644627) internal successors, (376), 245 states have internal predecessors, (376), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 23:22:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 485 transitions. [2023-12-19 23:22:44,185 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 485 transitions. Word has length 119 [2023-12-19 23:22:44,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:22:44,186 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 485 transitions. [2023-12-19 23:22:44,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:22:44,187 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 485 transitions. [2023-12-19 23:22:44,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 23:22:44,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:22:44,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:22:44,207 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 23:22:44,400 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 23:22:44,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:22:44,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:22:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash 233068803, now seen corresponding path program 1 times [2023-12-19 23:22:44,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:22:44,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125150910] [2023-12-19 23:22:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:44,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:22:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:22:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:22:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:22:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:22:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:22:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:22:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:22:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 23:22:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 23:22:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:22:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:22:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:22:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:22:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:22:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:22:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:22:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:22:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 23:22:44,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:22:44,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125150910] [2023-12-19 23:22:44,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125150910] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:22:44,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881912553] [2023-12-19 23:22:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:44,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:22:44,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:22:44,752 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 23:22:44,756 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 23:22:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 23:22:45,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:22:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-19 23:22:45,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:22:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881912553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:22:45,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:22:45,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-19 23:22:45,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185313080] [2023-12-19 23:22:45,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:22:45,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:22:45,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:22:45,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:22:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:22:45,065 INFO L87 Difference]: Start difference. First operand 321 states and 485 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:22:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:22:45,143 INFO L93 Difference]: Finished difference Result 499 states and 736 transitions. [2023-12-19 23:22:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:22:45,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 120 [2023-12-19 23:22:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:22:45,153 INFO L225 Difference]: With dead ends: 499 [2023-12-19 23:22:45,153 INFO L226 Difference]: Without dead ends: 323 [2023-12-19 23:22:45,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:22:45,157 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 0 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:22:45,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 943 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:22:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2023-12-19 23:22:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2023-12-19 23:22:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 244 states have (on average 1.5491803278688525) internal successors, (378), 247 states have internal predecessors, (378), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-19 23:22:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 487 transitions. [2023-12-19 23:22:45,192 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 487 transitions. Word has length 120 [2023-12-19 23:22:45,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:22:45,192 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 487 transitions. [2023-12-19 23:22:45,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:22:45,193 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 487 transitions. [2023-12-19 23:22:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-19 23:22:45,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:22:45,196 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:22:45,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 23:22:45,396 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 23:22:45,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:22:45,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:22:45,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1664048160, now seen corresponding path program 1 times [2023-12-19 23:22:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:22:45,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275571058] [2023-12-19 23:22:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:22:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:22:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:22:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:22:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:22:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:22:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:22:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 23:22:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 23:22:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:22:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:22:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:22:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:22:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:22:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:22:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:22:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 23:22:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 23:22:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 23:22:45,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:22:45,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275571058] [2023-12-19 23:22:45,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275571058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:22:45,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916298574] [2023-12-19 23:22:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:45,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:22:45,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:22:45,674 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 23:22:45,694 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 23:22:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:45,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 23:22:45,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:22:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-19 23:22:45,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:22:45,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916298574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:22:45,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:22:45,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-19 23:22:45,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12730857] [2023-12-19 23:22:45,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:22:45,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:22:45,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:22:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:22:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:22:45,989 INFO L87 Difference]: Start difference. First operand 323 states and 487 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:22:46,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:22:46,041 INFO L93 Difference]: Finished difference Result 676 states and 1033 transitions. [2023-12-19 23:22:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:22:46,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 127 [2023-12-19 23:22:46,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:22:46,047 INFO L225 Difference]: With dead ends: 676 [2023-12-19 23:22:46,047 INFO L226 Difference]: Without dead ends: 375 [2023-12-19 23:22:46,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:22:46,051 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 102 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:22:46,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 917 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:22:46,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-19 23:22:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 370. [2023-12-19 23:22:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 280 states have (on average 1.5642857142857143) internal successors, (438), 283 states have internal predecessors, (438), 66 states have call successors, (66), 23 states have call predecessors, (66), 23 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-12-19 23:22:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 569 transitions. [2023-12-19 23:22:46,094 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 569 transitions. Word has length 127 [2023-12-19 23:22:46,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:22:46,095 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 569 transitions. [2023-12-19 23:22:46,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:22:46,095 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 569 transitions. [2023-12-19 23:22:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-19 23:22:46,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:22:46,098 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:22:46,115 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 23:22:46,308 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 23:22:46,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:22:46,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:22:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash -556915965, now seen corresponding path program 1 times [2023-12-19 23:22:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:22:46,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288122989] [2023-12-19 23:22:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:46,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:22:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:22:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:22:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:22:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:22:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:22:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:22:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 23:22:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 23:22:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:22:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:22:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:22:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:22:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:22:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 23:22:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 23:22:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 23:22:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 23:22:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 23:22:46,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:22:46,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288122989] [2023-12-19 23:22:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288122989] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:22:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503228444] [2023-12-19 23:22:46,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:46,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:22:46,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:22:46,541 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 23:22:46,561 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 23:22:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:46,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 23:22:46,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:22:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 23:22:46,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:22:46,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503228444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:22:46,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:22:46,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-19 23:22:46,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590568463] [2023-12-19 23:22:46,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:22:46,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:22:46,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:22:46,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:22:46,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 23:22:46,909 INFO L87 Difference]: Start difference. First operand 370 states and 569 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 23:22:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:22:47,011 INFO L93 Difference]: Finished difference Result 735 states and 1132 transitions. [2023-12-19 23:22:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:22:47,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 128 [2023-12-19 23:22:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:22:47,015 INFO L225 Difference]: With dead ends: 735 [2023-12-19 23:22:47,015 INFO L226 Difference]: Without dead ends: 372 [2023-12-19 23:22:47,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:22:47,020 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 8 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:22:47,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1841 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:22:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-12-19 23:22:47,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2023-12-19 23:22:47,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 281 states have (on average 1.5622775800711743) internal successors, (439), 285 states have internal predecessors, (439), 66 states have call successors, (66), 23 states have call predecessors, (66), 24 states have return successors, (67), 65 states have call predecessors, (67), 65 states have call successors, (67) [2023-12-19 23:22:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 572 transitions. [2023-12-19 23:22:47,040 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 572 transitions. Word has length 128 [2023-12-19 23:22:47,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:22:47,040 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 572 transitions. [2023-12-19 23:22:47,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 23:22:47,041 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 572 transitions. [2023-12-19 23:22:47,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-19 23:22:47,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:22:47,043 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:22:47,064 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 23:22:47,253 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 23:22:47,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:22:47,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:22:47,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2031681540, now seen corresponding path program 1 times [2023-12-19 23:22:47,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:22:47,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716131649] [2023-12-19 23:22:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:47,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:22:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:22:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:22:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:22:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:22:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:22:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-19 23:22:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 23:22:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 23:22:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 23:22:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:22:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:22:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:22:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 23:22:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:22:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 23:22:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 23:22:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 23:22:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 23:22:47,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:22:47,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716131649] [2023-12-19 23:22:47,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716131649] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:22:47,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136010135] [2023-12-19 23:22:47,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:47,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:22:47,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:22:47,490 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 23:22:47,492 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 23:22:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:47,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 23:22:47,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:22:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 23:22:47,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:22:47,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136010135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:22:47,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:22:47,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-19 23:22:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870947123] [2023-12-19 23:22:47,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:22:47,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:22:47,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:22:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:22:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-19 23:22:47,914 INFO L87 Difference]: Start difference. First operand 372 states and 572 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 23:22:48,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:22:48,004 INFO L93 Difference]: Finished difference Result 737 states and 1137 transitions. [2023-12-19 23:22:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:22:48,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 129 [2023-12-19 23:22:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:22:48,007 INFO L225 Difference]: With dead ends: 737 [2023-12-19 23:22:48,007 INFO L226 Difference]: Without dead ends: 374 [2023-12-19 23:22:48,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-19 23:22:48,009 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 8 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:22:48,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1827 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 23:22:48,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-12-19 23:22:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2023-12-19 23:22:48,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 282 states have (on average 1.5602836879432624) internal successors, (440), 287 states have internal predecessors, (440), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (72), 65 states have call predecessors, (72), 65 states have call successors, (72) [2023-12-19 23:22:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 578 transitions. [2023-12-19 23:22:48,026 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 578 transitions. Word has length 129 [2023-12-19 23:22:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:22:48,026 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 578 transitions. [2023-12-19 23:22:48,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 23:22:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 578 transitions. [2023-12-19 23:22:48,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-19 23:22:48,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:22:48,049 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:22:48,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 23:22:48,257 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 23:22:48,258 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:22:48,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:22:48,258 INFO L85 PathProgramCache]: Analyzing trace with hash -961737422, now seen corresponding path program 1 times [2023-12-19 23:22:48,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:22:48,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292987619] [2023-12-19 23:22:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:48,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:22:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:22:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:22:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:22:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:22:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:22:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 23:22:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 23:22:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 23:22:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:22:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:22:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:22:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:22:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 23:22:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 23:22:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 23:22:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 23:22:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 23:22:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 23:22:48,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:22:48,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292987619] [2023-12-19 23:22:48,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292987619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:22:48,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:22:48,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 23:22:48,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817207532] [2023-12-19 23:22:48,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:22:48,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 23:22:48,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:22:48,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 23:22:48,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:22:48,473 INFO L87 Difference]: Start difference. First operand 374 states and 578 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 23:22:50,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:22:50,413 INFO L93 Difference]: Finished difference Result 819 states and 1278 transitions. [2023-12-19 23:22:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 23:22:50,413 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 130 [2023-12-19 23:22:50,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:22:50,417 INFO L225 Difference]: With dead ends: 819 [2023-12-19 23:22:50,417 INFO L226 Difference]: Without dead ends: 464 [2023-12-19 23:22:50,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 23:22:50,419 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1054 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 23:22:50,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 962 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 23:22:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-12-19 23:22:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 374. [2023-12-19 23:22:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 282 states have (on average 1.5602836879432624) internal successors, (440), 287 states have internal predecessors, (440), 66 states have call successors, (66), 23 states have call predecessors, (66), 25 states have return successors, (71), 65 states have call predecessors, (71), 65 states have call successors, (71) [2023-12-19 23:22:50,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 577 transitions. [2023-12-19 23:22:50,448 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 577 transitions. Word has length 130 [2023-12-19 23:22:50,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:22:50,449 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 577 transitions. [2023-12-19 23:22:50,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 23:22:50,449 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 577 transitions. [2023-12-19 23:22:50,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 23:22:50,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:22:50,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:22:50,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 23:22:50,452 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:22:50,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:22:50,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1607201651, now seen corresponding path program 2 times [2023-12-19 23:22:50,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:22:50,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785331244] [2023-12-19 23:22:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:50,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:22:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:22:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:22:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:22:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:22:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:22:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:22:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 23:22:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 23:22:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:22:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:22:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:22:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:22:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:22:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 23:22:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 23:22:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 23:22:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 23:22:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 23:22:50,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:22:50,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785331244] [2023-12-19 23:22:50,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785331244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:22:50,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:22:50,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 23:22:50,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931071467] [2023-12-19 23:22:50,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:22:50,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 23:22:50,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:22:50,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 23:22:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:22:50,686 INFO L87 Difference]: Start difference. First operand 374 states and 577 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 23:22:52,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:22:52,457 INFO L93 Difference]: Finished difference Result 821 states and 1281 transitions. [2023-12-19 23:22:52,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 23:22:52,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 131 [2023-12-19 23:22:52,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:22:52,461 INFO L225 Difference]: With dead ends: 821 [2023-12-19 23:22:52,461 INFO L226 Difference]: Without dead ends: 466 [2023-12-19 23:22:52,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 23:22:52,463 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1047 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 23:22:52,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 963 Invalid, 2570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 23:22:52,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-19 23:22:52,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 376. [2023-12-19 23:22:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 283 states have (on average 1.558303886925795) internal successors, (441), 289 states have internal predecessors, (441), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2023-12-19 23:22:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 580 transitions. [2023-12-19 23:22:52,489 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 580 transitions. Word has length 131 [2023-12-19 23:22:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:22:52,490 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 580 transitions. [2023-12-19 23:22:52,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 23:22:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 580 transitions. [2023-12-19 23:22:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 23:22:52,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:22:52,492 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:22:52,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 23:22:52,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:22:52,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:22:52,493 INFO L85 PathProgramCache]: Analyzing trace with hash 57031467, now seen corresponding path program 1 times [2023-12-19 23:22:52,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:22:52,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035397641] [2023-12-19 23:22:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:52,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:22:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:22:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:22:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:22:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:22:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:22:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:22:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 23:22:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:22:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:22:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:22:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:22:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:22:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:22:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:22:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:22:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 23:22:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 23:22:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 23:22:52,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:22:52,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035397641] [2023-12-19 23:22:52,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035397641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:22:52,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:22:52,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 23:22:52,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581125903] [2023-12-19 23:22:52,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:22:52,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 23:22:52,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:22:52,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 23:22:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:22:52,693 INFO L87 Difference]: Start difference. First operand 376 states and 580 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 23:22:54,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:22:54,439 INFO L93 Difference]: Finished difference Result 821 states and 1280 transitions. [2023-12-19 23:22:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 23:22:54,440 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 132 [2023-12-19 23:22:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:22:54,443 INFO L225 Difference]: With dead ends: 821 [2023-12-19 23:22:54,443 INFO L226 Difference]: Without dead ends: 466 [2023-12-19 23:22:54,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-12-19 23:22:54,445 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1052 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 23:22:54,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 962 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 23:22:54,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-19 23:22:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 376. [2023-12-19 23:22:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 283 states have (on average 1.558303886925795) internal successors, (441), 289 states have internal predecessors, (441), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2023-12-19 23:22:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 580 transitions. [2023-12-19 23:22:54,470 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 580 transitions. Word has length 132 [2023-12-19 23:22:54,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:22:54,470 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 580 transitions. [2023-12-19 23:22:54,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 23:22:54,470 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 580 transitions. [2023-12-19 23:22:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-19 23:22:54,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:22:54,473 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:22:54,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 23:22:54,473 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:22:54,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:22:54,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1840465299, now seen corresponding path program 1 times [2023-12-19 23:22:54,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:22:54,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986468709] [2023-12-19 23:22:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:54,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:22:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:22:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:22:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:22:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:22:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:22:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:22:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 23:22:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:22:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:22:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:22:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:22:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:22:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:22:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:22:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:22:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 23:22:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 23:22:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 23:22:54,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:22:54,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986468709] [2023-12-19 23:22:54,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986468709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:22:54,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:22:54,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 23:22:54,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511989469] [2023-12-19 23:22:54,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:22:54,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 23:22:54,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:22:54,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 23:22:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-19 23:22:54,706 INFO L87 Difference]: Start difference. First operand 376 states and 580 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 23:22:57,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:22:57,071 INFO L93 Difference]: Finished difference Result 819 states and 1275 transitions. [2023-12-19 23:22:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 23:22:57,072 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 132 [2023-12-19 23:22:57,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:22:57,075 INFO L225 Difference]: With dead ends: 819 [2023-12-19 23:22:57,075 INFO L226 Difference]: Without dead ends: 466 [2023-12-19 23:22:57,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-19 23:22:57,077 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 1059 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 3692 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 4050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 3692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:22:57,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1331 Invalid, 4050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 3692 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 23:22:57,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-19 23:22:57,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 376. [2023-12-19 23:22:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 283 states have (on average 1.558303886925795) internal successors, (441), 289 states have internal predecessors, (441), 66 states have call successors, (66), 23 states have call predecessors, (66), 26 states have return successors, (72), 65 states have call predecessors, (72), 65 states have call successors, (72) [2023-12-19 23:22:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 579 transitions. [2023-12-19 23:22:57,102 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 579 transitions. Word has length 132 [2023-12-19 23:22:57,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:22:57,103 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 579 transitions. [2023-12-19 23:22:57,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 23:22:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 579 transitions. [2023-12-19 23:22:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-19 23:22:57,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:22:57,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:22:57,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 23:22:57,105 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:22:57,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:22:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash 702816261, now seen corresponding path program 2 times [2023-12-19 23:22:57,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:22:57,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142799766] [2023-12-19 23:22:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:57,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:22:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:22:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:22:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:22:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:22:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:22:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:22:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 23:22:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:22:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:22:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:22:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:22:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:22:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:22:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:22:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 23:22:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 23:22:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 23:22:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 23:22:57,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:22:57,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142799766] [2023-12-19 23:22:57,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142799766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:22:57,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:22:57,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 23:22:57,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406092200] [2023-12-19 23:22:57,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:22:57,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 23:22:57,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:22:57,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 23:22:57,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-19 23:22:57,333 INFO L87 Difference]: Start difference. First operand 376 states and 579 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 23:22:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:22:59,576 INFO L93 Difference]: Finished difference Result 821 states and 1281 transitions. [2023-12-19 23:22:59,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 23:22:59,576 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 133 [2023-12-19 23:22:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:22:59,579 INFO L225 Difference]: With dead ends: 821 [2023-12-19 23:22:59,579 INFO L226 Difference]: Without dead ends: 468 [2023-12-19 23:22:59,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-19 23:22:59,581 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 1054 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 3728 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 4083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 3728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 23:22:59,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1331 Invalid, 4083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 3728 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 23:22:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-19 23:22:59,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 378. [2023-12-19 23:22:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 284 states have (on average 1.556338028169014) internal successors, (442), 291 states have internal predecessors, (442), 66 states have call successors, (66), 23 states have call predecessors, (66), 27 states have return successors, (77), 65 states have call predecessors, (77), 65 states have call successors, (77) [2023-12-19 23:22:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 585 transitions. [2023-12-19 23:22:59,607 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 585 transitions. Word has length 133 [2023-12-19 23:22:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:22:59,607 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 585 transitions. [2023-12-19 23:22:59,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-12-19 23:22:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 585 transitions. [2023-12-19 23:22:59,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 23:22:59,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:22:59,609 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:22:59,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 23:22:59,610 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:22:59,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:22:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1812303992, now seen corresponding path program 1 times [2023-12-19 23:22:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:22:59,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249857832] [2023-12-19 23:22:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:59,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:22:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:22:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:22:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:22:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:22:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:22:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:22:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 23:22:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 23:22:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:22:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:22:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:22:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:22:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 23:22:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:22:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 23:22:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 23:22:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 23:22:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:22:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 23:22:59,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:22:59,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249857832] [2023-12-19 23:22:59,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249857832] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:22:59,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610550627] [2023-12-19 23:22:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:22:59,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:22:59,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:22:59,825 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 23:22:59,841 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 23:23:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:00,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 23:23:00,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:23:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:00,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:23:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:00,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610550627] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:23:00,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:23:00,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-12-19 23:23:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176785792] [2023-12-19 23:23:00,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:23:00,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 23:23:00,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:00,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 23:23:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-19 23:23:00,197 INFO L87 Difference]: Start difference. First operand 378 states and 585 transitions. Second operand has 15 states, 14 states have (on average 9.857142857142858) internal successors, (138), 11 states have internal predecessors, (138), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-19 23:23:02,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:23:02,608 INFO L93 Difference]: Finished difference Result 1150 states and 1892 transitions. [2023-12-19 23:23:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 23:23:02,608 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.857142857142858) internal successors, (138), 11 states have internal predecessors, (138), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 134 [2023-12-19 23:23:02,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:23:02,613 INFO L225 Difference]: With dead ends: 1150 [2023-12-19 23:23:02,613 INFO L226 Difference]: Without dead ends: 798 [2023-12-19 23:23:02,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-12-19 23:23:02,616 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 2164 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 3658 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 4362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 3658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:23:02,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 1473 Invalid, 4362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 3658 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 23:23:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2023-12-19 23:23:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 693. [2023-12-19 23:23:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 535 states have (on average 1.6074766355140186) internal successors, (860), 542 states have internal predecessors, (860), 130 states have call successors, (130), 23 states have call predecessors, (130), 27 states have return successors, (151), 129 states have call predecessors, (151), 129 states have call successors, (151) [2023-12-19 23:23:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1141 transitions. [2023-12-19 23:23:02,654 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1141 transitions. Word has length 134 [2023-12-19 23:23:02,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:23:02,655 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1141 transitions. [2023-12-19 23:23:02,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.857142857142858) internal successors, (138), 11 states have internal predecessors, (138), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2023-12-19 23:23:02,655 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1141 transitions. [2023-12-19 23:23:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-19 23:23:02,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:23:02,659 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:02,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 23:23:02,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:23:02,869 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:23:02,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:23:02,869 INFO L85 PathProgramCache]: Analyzing trace with hash -840293484, now seen corresponding path program 1 times [2023-12-19 23:23:02,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:23:02,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040284516] [2023-12-19 23:23:02,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:02,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:23:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:23:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:23:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:23:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:23:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:23:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:23:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:23:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:23:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:23:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:23:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:23:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:23:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:23:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 23:23:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 23:23:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 23:23:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 23:23:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:02,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:23:02,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040284516] [2023-12-19 23:23:02,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040284516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:23:02,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:23:02,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:23:02,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985468131] [2023-12-19 23:23:02,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:23:02,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:23:02,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:02,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:23:02,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:23:02,999 INFO L87 Difference]: Start difference. First operand 693 states and 1141 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:04,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:23:04,223 INFO L93 Difference]: Finished difference Result 1705 states and 2881 transitions. [2023-12-19 23:23:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:23:04,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 138 [2023-12-19 23:23:04,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:23:04,230 INFO L225 Difference]: With dead ends: 1705 [2023-12-19 23:23:04,230 INFO L226 Difference]: Without dead ends: 1080 [2023-12-19 23:23:04,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:23:04,233 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1143 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:23:04,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 724 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:23:04,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2023-12-19 23:23:04,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 985. [2023-12-19 23:23:04,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 763 states have (on average 1.6212319790301442) internal successors, (1237), 770 states have internal predecessors, (1237), 194 states have call successors, (194), 23 states have call predecessors, (194), 27 states have return successors, (225), 193 states have call predecessors, (225), 193 states have call successors, (225) [2023-12-19 23:23:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1656 transitions. [2023-12-19 23:23:04,296 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1656 transitions. Word has length 138 [2023-12-19 23:23:04,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:23:04,297 INFO L495 AbstractCegarLoop]: Abstraction has 985 states and 1656 transitions. [2023-12-19 23:23:04,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1656 transitions. [2023-12-19 23:23:04,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 23:23:04,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:23:04,303 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:04,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 23:23:04,303 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:23:04,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:23:04,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1926538884, now seen corresponding path program 1 times [2023-12-19 23:23:04,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:23:04,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715174924] [2023-12-19 23:23:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:04,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:23:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:23:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:23:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:23:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:23:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:23:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:23:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 23:23:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:23:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:23:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:23:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:23:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:23:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:23:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:23:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 23:23:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 23:23:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 23:23:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:04,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:23:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715174924] [2023-12-19 23:23:04,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715174924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:23:04,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:23:04,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:23:04,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745272318] [2023-12-19 23:23:04,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:23:04,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:23:04,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:23:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:23:04,434 INFO L87 Difference]: Start difference. First operand 985 states and 1656 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:05,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:23:05,679 INFO L93 Difference]: Finished difference Result 2422 states and 4138 transitions. [2023-12-19 23:23:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:23:05,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2023-12-19 23:23:05,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:23:05,687 INFO L225 Difference]: With dead ends: 2422 [2023-12-19 23:23:05,688 INFO L226 Difference]: Without dead ends: 1555 [2023-12-19 23:23:05,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:23:05,692 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1140 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:23:05,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 708 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:23:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2023-12-19 23:23:05,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1460. [2023-12-19 23:23:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1143 states have (on average 1.6281714785651793) internal successors, (1861), 1150 states have internal predecessors, (1861), 289 states have call successors, (289), 23 states have call predecessors, (289), 27 states have return successors, (320), 288 states have call predecessors, (320), 288 states have call successors, (320) [2023-12-19 23:23:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2470 transitions. [2023-12-19 23:23:05,784 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2470 transitions. Word has length 139 [2023-12-19 23:23:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:23:05,785 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 2470 transitions. [2023-12-19 23:23:05,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2470 transitions. [2023-12-19 23:23:05,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 23:23:05,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:23:05,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:05,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 23:23:05,794 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:23:05,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:23:05,795 INFO L85 PathProgramCache]: Analyzing trace with hash -463460986, now seen corresponding path program 1 times [2023-12-19 23:23:05,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:23:05,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152094975] [2023-12-19 23:23:05,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:05,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:23:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:23:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:23:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:23:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:23:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:23:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:23:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:23:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:23:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:23:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:23:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:23:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 23:23:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:23:05,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 23:23:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 23:23:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 23:23:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-19 23:23:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:05,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:23:05,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152094975] [2023-12-19 23:23:05,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152094975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:23:05,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:23:05,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:23:05,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360703929] [2023-12-19 23:23:05,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:23:05,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:23:05,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:05,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:23:05,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:23:05,916 INFO L87 Difference]: Start difference. First operand 1460 states and 2470 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:07,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:23:07,189 INFO L93 Difference]: Finished difference Result 3484 states and 6016 transitions. [2023-12-19 23:23:07,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:23:07,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 140 [2023-12-19 23:23:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:23:07,201 INFO L225 Difference]: With dead ends: 3484 [2023-12-19 23:23:07,201 INFO L226 Difference]: Without dead ends: 2270 [2023-12-19 23:23:07,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:23:07,206 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1136 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:23:07,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 701 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:23:07,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2023-12-19 23:23:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2175. [2023-12-19 23:23:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 1735 states have (on average 1.6340057636887608) internal successors, (2835), 1742 states have internal predecessors, (2835), 412 states have call successors, (412), 23 states have call predecessors, (412), 27 states have return successors, (459), 411 states have call predecessors, (459), 411 states have call successors, (459) [2023-12-19 23:23:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3706 transitions. [2023-12-19 23:23:07,314 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3706 transitions. Word has length 140 [2023-12-19 23:23:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:23:07,314 INFO L495 AbstractCegarLoop]: Abstraction has 2175 states and 3706 transitions. [2023-12-19 23:23:07,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3706 transitions. [2023-12-19 23:23:07,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 23:23:07,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:23:07,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:07,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 23:23:07,327 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:23:07,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:23:07,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1136856963, now seen corresponding path program 1 times [2023-12-19 23:23:07,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:23:07,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335964154] [2023-12-19 23:23:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:23:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:23:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:23:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:23:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:23:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:23:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:23:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:23:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:23:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:23:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 23:23:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:23:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:23:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 23:23:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 23:23:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 23:23:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 23:23:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 23:23:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:07,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:23:07,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335964154] [2023-12-19 23:23:07,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335964154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:23:07,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:23:07,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:23:07,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318661348] [2023-12-19 23:23:07,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:23:07,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:23:07,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:07,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:23:07,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:23:07,423 INFO L87 Difference]: Start difference. First operand 2175 states and 3706 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:08,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:23:08,601 INFO L93 Difference]: Finished difference Result 5126 states and 8929 transitions. [2023-12-19 23:23:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:23:08,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 141 [2023-12-19 23:23:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:23:08,617 INFO L225 Difference]: With dead ends: 5126 [2023-12-19 23:23:08,617 INFO L226 Difference]: Without dead ends: 3406 [2023-12-19 23:23:08,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:23:08,623 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1134 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:23:08,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 703 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 23:23:08,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2023-12-19 23:23:08,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 3311. [2023-12-19 23:23:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3311 states, 2692 states have (on average 1.637815750371471) internal successors, (4409), 2699 states have internal predecessors, (4409), 591 states have call successors, (591), 23 states have call predecessors, (591), 27 states have return successors, (664), 590 states have call predecessors, (664), 590 states have call successors, (664) [2023-12-19 23:23:08,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 5664 transitions. [2023-12-19 23:23:08,773 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 5664 transitions. Word has length 141 [2023-12-19 23:23:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:23:08,773 INFO L495 AbstractCegarLoop]: Abstraction has 3311 states and 5664 transitions. [2023-12-19 23:23:08,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:08,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 5664 transitions. [2023-12-19 23:23:08,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 23:23:08,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:23:08,789 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:08,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 23:23:08,789 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:23:08,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:23:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash -200108150, now seen corresponding path program 1 times [2023-12-19 23:23:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:23:08,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123870443] [2023-12-19 23:23:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:08,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:23:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:23:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:23:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:23:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:23:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:23:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:23:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 23:23:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:23:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:23:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:23:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:23:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 23:23:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 23:23:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 23:23:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 23:23:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 23:23:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 23:23:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:08,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:23:08,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123870443] [2023-12-19 23:23:08,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123870443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:23:08,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:23:08,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:23:08,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116979314] [2023-12-19 23:23:08,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:23:08,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:23:08,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:08,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:23:08,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:23:08,893 INFO L87 Difference]: Start difference. First operand 3311 states and 5664 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:23:10,232 INFO L93 Difference]: Finished difference Result 8081 states and 14127 transitions. [2023-12-19 23:23:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:23:10,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 142 [2023-12-19 23:23:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:23:10,262 INFO L225 Difference]: With dead ends: 8081 [2023-12-19 23:23:10,262 INFO L226 Difference]: Without dead ends: 5464 [2023-12-19 23:23:10,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:23:10,273 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1134 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:23:10,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 748 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:23:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2023-12-19 23:23:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 5369. [2023-12-19 23:23:10,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5369 states, 4374 states have (on average 1.6305441243712848) internal successors, (7132), 4381 states have internal predecessors, (7132), 967 states have call successors, (967), 23 states have call predecessors, (967), 27 states have return successors, (1084), 966 states have call predecessors, (1084), 966 states have call successors, (1084) [2023-12-19 23:23:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5369 states to 5369 states and 9183 transitions. [2023-12-19 23:23:10,576 INFO L78 Accepts]: Start accepts. Automaton has 5369 states and 9183 transitions. Word has length 142 [2023-12-19 23:23:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:23:10,576 INFO L495 AbstractCegarLoop]: Abstraction has 5369 states and 9183 transitions. [2023-12-19 23:23:10,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5369 states and 9183 transitions. [2023-12-19 23:23:10,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 23:23:10,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:23:10,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:10,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 23:23:10,602 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:23:10,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:23:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash -478346881, now seen corresponding path program 1 times [2023-12-19 23:23:10,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:23:10,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074396068] [2023-12-19 23:23:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:10,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:23:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:23:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:23:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:23:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:23:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:23:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:23:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:23:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:23:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:23:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:23:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:23:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 23:23:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 23:23:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 23:23:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 23:23:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 23:23:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-19 23:23:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:10,697 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:10,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:23:10,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074396068] [2023-12-19 23:23:10,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074396068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:23:10,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:23:10,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:23:10,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644604563] [2023-12-19 23:23:10,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:23:10,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:23:10,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:10,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:23:10,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:23:10,700 INFO L87 Difference]: Start difference. First operand 5369 states and 9183 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:12,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:23:12,089 INFO L93 Difference]: Finished difference Result 13286 states and 23211 transitions. [2023-12-19 23:23:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:23:12,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2023-12-19 23:23:12,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:23:12,137 INFO L225 Difference]: With dead ends: 13286 [2023-12-19 23:23:12,137 INFO L226 Difference]: Without dead ends: 8997 [2023-12-19 23:23:12,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:23:12,153 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1133 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:23:12,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 704 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:23:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8997 states. [2023-12-19 23:23:12,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8997 to 8902. [2023-12-19 23:23:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8902 states, 7301 states have (on average 1.6284070675249966) internal successors, (11889), 7308 states have internal predecessors, (11889), 1573 states have call successors, (1573), 23 states have call predecessors, (1573), 27 states have return successors, (1768), 1572 states have call predecessors, (1768), 1572 states have call successors, (1768) [2023-12-19 23:23:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8902 states to 8902 states and 15230 transitions. [2023-12-19 23:23:12,540 INFO L78 Accepts]: Start accepts. Automaton has 8902 states and 15230 transitions. Word has length 143 [2023-12-19 23:23:12,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:23:12,541 INFO L495 AbstractCegarLoop]: Abstraction has 8902 states and 15230 transitions. [2023-12-19 23:23:12,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:12,541 INFO L276 IsEmpty]: Start isEmpty. Operand 8902 states and 15230 transitions. [2023-12-19 23:23:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 23:23:12,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:23:12,574 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:12,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 23:23:12,574 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:23:12,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:23:12,574 INFO L85 PathProgramCache]: Analyzing trace with hash 356248072, now seen corresponding path program 1 times [2023-12-19 23:23:12,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:23:12,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411764676] [2023-12-19 23:23:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:12,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:23:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:23:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:23:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:23:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:23:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:23:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:23:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:23:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:23:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:23:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:23:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:23:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:23:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 23:23:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 23:23:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 23:23:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 23:23:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 23:23:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:12,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:23:12,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411764676] [2023-12-19 23:23:12,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411764676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:23:12,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:23:12,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:23:12,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118991735] [2023-12-19 23:23:12,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:23:12,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:23:12,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:12,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:23:12,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:23:12,681 INFO L87 Difference]: Start difference. First operand 8902 states and 15230 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:23:14,094 INFO L93 Difference]: Finished difference Result 23058 states and 40240 transitions. [2023-12-19 23:23:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:23:14,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2023-12-19 23:23:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:23:14,219 INFO L225 Difference]: With dead ends: 23058 [2023-12-19 23:23:14,219 INFO L226 Difference]: Without dead ends: 15669 [2023-12-19 23:23:14,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:23:14,240 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1128 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:23:14,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 724 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 23:23:14,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15669 states. [2023-12-19 23:23:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15669 to 15574. [2023-12-19 23:23:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15574 states, 12770 states have (on average 1.6192638997650743) internal successors, (20678), 12777 states have internal predecessors, (20678), 2776 states have call successors, (2776), 23 states have call predecessors, (2776), 27 states have return successors, (3115), 2775 states have call predecessors, (3115), 2775 states have call successors, (3115) [2023-12-19 23:23:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15574 states to 15574 states and 26569 transitions. [2023-12-19 23:23:14,927 INFO L78 Accepts]: Start accepts. Automaton has 15574 states and 26569 transitions. Word has length 144 [2023-12-19 23:23:14,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:23:14,928 INFO L495 AbstractCegarLoop]: Abstraction has 15574 states and 26569 transitions. [2023-12-19 23:23:14,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 15574 states and 26569 transitions. [2023-12-19 23:23:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 23:23:14,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:23:14,984 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:14,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 23:23:14,984 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:23:14,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:23:14,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1220596446, now seen corresponding path program 1 times [2023-12-19 23:23:14,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:23:14,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338241634] [2023-12-19 23:23:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:14,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:23:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:23:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:23:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:23:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:23:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:23:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:23:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:23:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:23:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:23:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:23:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:23:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:23:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:23:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 23:23:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 23:23:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 23:23:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-19 23:23:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:15,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:23:15,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338241634] [2023-12-19 23:23:15,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338241634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:23:15,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:23:15,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:23:15,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017183392] [2023-12-19 23:23:15,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:23:15,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:23:15,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:15,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:23:15,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:23:15,106 INFO L87 Difference]: Start difference. First operand 15574 states and 26569 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:23:16,933 INFO L93 Difference]: Finished difference Result 41225 states and 71838 transitions. [2023-12-19 23:23:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:23:16,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2023-12-19 23:23:16,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:23:17,068 INFO L225 Difference]: With dead ends: 41225 [2023-12-19 23:23:17,069 INFO L226 Difference]: Without dead ends: 27784 [2023-12-19 23:23:17,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:23:17,117 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1126 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 23:23:17,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 702 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 23:23:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27784 states. [2023-12-19 23:23:18,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27784 to 27689. [2023-12-19 23:23:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27689 states, 22846 states have (on average 1.6153812483585748) internal successors, (36905), 22853 states have internal predecessors, (36905), 4815 states have call successors, (4815), 23 states have call predecessors, (4815), 27 states have return successors, (5428), 4814 states have call predecessors, (5428), 4814 states have call successors, (5428) [2023-12-19 23:23:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27689 states to 27689 states and 47148 transitions. [2023-12-19 23:23:18,453 INFO L78 Accepts]: Start accepts. Automaton has 27689 states and 47148 transitions. Word has length 145 [2023-12-19 23:23:18,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:23:18,453 INFO L495 AbstractCegarLoop]: Abstraction has 27689 states and 47148 transitions. [2023-12-19 23:23:18,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:18,453 INFO L276 IsEmpty]: Start isEmpty. Operand 27689 states and 47148 transitions. [2023-12-19 23:23:18,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 23:23:18,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:23:18,510 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:18,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 23:23:18,511 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:23:18,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:23:18,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1187280934, now seen corresponding path program 1 times [2023-12-19 23:23:18,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:23:18,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621204875] [2023-12-19 23:23:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:18,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:23:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:23:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:23:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:23:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:23:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:23:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:23:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:23:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:23:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:23:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:23:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 23:23:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:23:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 23:23:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 23:23:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 23:23:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-19 23:23:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 23:23:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:18,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:23:18,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621204875] [2023-12-19 23:23:18,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621204875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:23:18,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:23:18,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:23:18,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579413171] [2023-12-19 23:23:18,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:23:18,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:23:18,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:18,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:23:18,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:23:18,612 INFO L87 Difference]: Start difference. First operand 27689 states and 47148 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:21,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:23:21,130 INFO L93 Difference]: Finished difference Result 75417 states and 130632 transitions. [2023-12-19 23:23:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:23:21,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2023-12-19 23:23:21,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:23:21,350 INFO L225 Difference]: With dead ends: 75417 [2023-12-19 23:23:21,350 INFO L226 Difference]: Without dead ends: 50608 [2023-12-19 23:23:21,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:23:21,411 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 1126 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:23:21,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 701 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 23:23:21,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50608 states. [2023-12-19 23:23:23,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50608 to 50513. [2023-12-19 23:23:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50513 states, 41955 states have (on average 1.6101299010844954) internal successors, (67553), 41962 states have internal predecessors, (67553), 8530 states have call successors, (8530), 23 states have call predecessors, (8530), 27 states have return successors, (9675), 8529 states have call predecessors, (9675), 8529 states have call successors, (9675) [2023-12-19 23:23:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50513 states to 50513 states and 85758 transitions. [2023-12-19 23:23:23,810 INFO L78 Accepts]: Start accepts. Automaton has 50513 states and 85758 transitions. Word has length 146 [2023-12-19 23:23:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:23:23,810 INFO L495 AbstractCegarLoop]: Abstraction has 50513 states and 85758 transitions. [2023-12-19 23:23:23,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 50513 states and 85758 transitions. [2023-12-19 23:23:24,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 23:23:24,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:23:24,108 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:24,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 23:23:24,109 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:23:24,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:23:24,109 INFO L85 PathProgramCache]: Analyzing trace with hash -511843970, now seen corresponding path program 1 times [2023-12-19 23:23:24,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:23:24,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317697084] [2023-12-19 23:23:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:24,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:23:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:23:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:23:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:23:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:23:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:23:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:23:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:23:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:23:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:23:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:23:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 23:23:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 23:23:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 23:23:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 23:23:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 23:23:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 23:23:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-19 23:23:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:23:24,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:23:24,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317697084] [2023-12-19 23:23:24,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317697084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:23:24,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:23:24,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:23:24,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240327807] [2023-12-19 23:23:24,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:23:24,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:23:24,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:24,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:23:24,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:23:24,253 INFO L87 Difference]: Start difference. First operand 50513 states and 85758 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:23:27,146 INFO L93 Difference]: Finished difference Result 94164 states and 163538 transitions. [2023-12-19 23:23:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:23:27,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2023-12-19 23:23:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:23:27,497 INFO L225 Difference]: With dead ends: 94164 [2023-12-19 23:23:27,497 INFO L226 Difference]: Without dead ends: 93988 [2023-12-19 23:23:27,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 23:23:27,545 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1125 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:23:27,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 700 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 23:23:27,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93988 states. [2023-12-19 23:23:30,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93988 to 93893. [2023-12-19 23:23:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93893 states, 78536 states have (on average 1.60335387592951) internal successors, (125921), 78543 states have internal predecessors, (125921), 15329 states have call successors, (15329), 23 states have call predecessors, (15329), 27 states have return successors, (17520), 15328 states have call predecessors, (17520), 15328 states have call successors, (17520) [2023-12-19 23:23:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93893 states to 93893 states and 158770 transitions. [2023-12-19 23:23:30,828 INFO L78 Accepts]: Start accepts. Automaton has 93893 states and 158770 transitions. Word has length 147 [2023-12-19 23:23:30,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:23:30,828 INFO L495 AbstractCegarLoop]: Abstraction has 93893 states and 158770 transitions. [2023-12-19 23:23:30,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-19 23:23:30,829 INFO L276 IsEmpty]: Start isEmpty. Operand 93893 states and 158770 transitions. [2023-12-19 23:23:31,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-19 23:23:31,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:23:31,281 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:31,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 23:23:31,281 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:23:31,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:23:31,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1974592327, now seen corresponding path program 1 times [2023-12-19 23:23:31,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:23:31,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676807192] [2023-12-19 23:23:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:31,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:23:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:23:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:23:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:23:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:23:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:23:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:23:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:23:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:23:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:23:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:23:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:23:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 23:23:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 23:23:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 23:23:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 23:23:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 23:23:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-19 23:23:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-19 23:23:31,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:23:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676807192] [2023-12-19 23:23:31,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676807192] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:23:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694866790] [2023-12-19 23:23:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:23:31,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:23:31,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:23:31,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:23:31,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 23:23:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:23:32,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 23:23:32,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:23:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 23:23:32,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:23:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 23:23:32,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694866790] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:23:32,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:23:32,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2023-12-19 23:23:32,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067096290] [2023-12-19 23:23:32,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:23:32,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 23:23:32,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:23:32,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 23:23:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=908, Unknown=0, NotChecked=0, Total=992 [2023-12-19 23:23:32,882 INFO L87 Difference]: Start difference. First operand 93893 states and 158770 transitions. Second operand has 32 states, 30 states have (on average 7.866666666666666) internal successors, (236), 24 states have internal predecessors, (236), 9 states have call successors, (50), 12 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2023-12-19 23:24:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:24:03,736 INFO L93 Difference]: Finished difference Result 561445 states and 998551 transitions. [2023-12-19 23:24:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2023-12-19 23:24:03,737 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 7.866666666666666) internal successors, (236), 24 states have internal predecessors, (236), 9 states have call successors, (50), 12 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) Word has length 148 [2023-12-19 23:24:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:24:07,246 INFO L225 Difference]: With dead ends: 561445 [2023-12-19 23:24:07,246 INFO L226 Difference]: Without dead ends: 561272 [2023-12-19 23:24:07,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11943 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3913, Invalid=29029, Unknown=0, NotChecked=0, Total=32942 [2023-12-19 23:24:07,492 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 6591 mSDsluCounter, 11159 mSDsCounter, 0 mSdLazyCounter, 27194 mSolverCounterSat, 2141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6627 SdHoareTripleChecker+Valid, 11703 SdHoareTripleChecker+Invalid, 29335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2141 IncrementalHoareTripleChecker+Valid, 27194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:24:07,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6627 Valid, 11703 Invalid, 29335 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2141 Valid, 27194 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2023-12-19 23:24:07,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561272 states. [2023-12-19 23:24:27,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561272 to 374051. [2023-12-19 23:24:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374051 states, 312988 states have (on average 1.6042404181629966) internal successors, (502108), 312798 states have internal predecessors, (502108), 60912 states have call successors, (60912), 126 states have call predecessors, (60912), 150 states have return successors, (84880), 61138 states have call predecessors, (84880), 60906 states have call successors, (84880) [2023-12-19 23:24:29,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374051 states to 374051 states and 647900 transitions. [2023-12-19 23:24:29,908 INFO L78 Accepts]: Start accepts. Automaton has 374051 states and 647900 transitions. Word has length 148 [2023-12-19 23:24:29,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:24:29,908 INFO L495 AbstractCegarLoop]: Abstraction has 374051 states and 647900 transitions. [2023-12-19 23:24:29,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 7.866666666666666) internal successors, (236), 24 states have internal predecessors, (236), 9 states have call successors, (50), 12 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2023-12-19 23:24:29,909 INFO L276 IsEmpty]: Start isEmpty. Operand 374051 states and 647900 transitions. [2023-12-19 23:24:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-19 23:24:30,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:24:30,306 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:30,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 23:24:30,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:24:30,508 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:24:30,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:24:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash -922591694, now seen corresponding path program 1 times [2023-12-19 23:24:30,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:24:30,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292045391] [2023-12-19 23:24:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:24:30,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:24:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:24:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:24:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:24:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:24:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:24:30,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:24:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:24:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:24:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 23:24:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:24:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:24:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 23:24:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 23:24:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 23:24:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 23:24:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 23:24:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-19 23:24:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:24:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-19 23:24:30,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:24:30,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292045391] [2023-12-19 23:24:30,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292045391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:24:30,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:24:30,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 23:24:30,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727033205] [2023-12-19 23:24:30,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:24:30,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 23:24:30,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:24:30,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 23:24:30,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:24:30,641 INFO L87 Difference]: Start difference. First operand 374051 states and 647900 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-19 23:24:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:24:41,360 INFO L93 Difference]: Finished difference Result 375213 states and 662612 transitions. [2023-12-19 23:24:41,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 23:24:41,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 150 [2023-12-19 23:24:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted.