/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_spec0_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 22:57:11,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 22:57:11,451 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 22:57:11,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 22:57:11,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 22:57:11,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 22:57:11,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 22:57:11,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 22:57:11,481 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 22:57:11,484 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 22:57:11,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 22:57:11,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 22:57:11,485 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 22:57:11,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 22:57:11,486 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 22:57:11,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 22:57:11,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 22:57:11,487 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 22:57:11,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 22:57:11,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 22:57:11,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 22:57:11,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 22:57:11,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 22:57:11,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 22:57:11,488 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 22:57:11,488 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 22:57:11,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 22:57:11,488 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 22:57:11,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 22:57:11,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 22:57:11,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 22:57:11,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 22:57:11,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:57:11,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 22:57:11,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 22:57:11,490 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 22:57:11,490 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 22:57:11,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 22:57:11,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 22:57:11,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 22:57:11,491 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 22:57:11,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 22:57:11,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 22:57:11,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 22:57:11,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 22:57:11,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 22:57:11,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 22:57:11,722 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 22:57:11,722 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 22:57:11,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product24.cil.c [2023-12-19 22:57:12,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 22:57:13,197 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 22:57:13,198 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product24.cil.c [2023-12-19 22:57:13,218 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e903ad0/28d3d969dccf43a7b4fb70eb5fcd6a6c/FLAG50398808d [2023-12-19 22:57:13,229 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68e903ad0/28d3d969dccf43a7b4fb70eb5fcd6a6c [2023-12-19 22:57:13,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 22:57:13,232 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 22:57:13,234 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 22:57:13,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 22:57:13,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 22:57:13,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:13,239 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e8028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13, skipping insertion in model container [2023-12-19 22:57:13,239 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:13,302 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 22:57:13,667 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_spec0_product24.cil.c[25283,25296] [2023-12-19 22:57:13,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:57:13,772 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 22:57:13,779 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2023-12-19 22:57:13,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [460] [2023-12-19 22:57:13,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [689] [2023-12-19 22:57:13,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1036] [2023-12-19 22:57:13,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1332] [2023-12-19 22:57:13,780 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1341] [2023-12-19 22:57:13,781 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1707] [2023-12-19 22:57:13,781 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptForward_spec.i","") [1803] [2023-12-19 22:57:13,781 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1822] [2023-12-19 22:57:13,781 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1857] [2023-12-19 22:57:13,781 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2922] [2023-12-19 22:57:13,804 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_spec0_product24.cil.c[25283,25296] [2023-12-19 22:57:13,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 22:57:13,865 INFO L206 MainTranslator]: Completed translation [2023-12-19 22:57:13,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13 WrapperNode [2023-12-19 22:57:13,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 22:57:13,866 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 22:57:13,867 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 22:57:13,867 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 22:57:13,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:13,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:13,944 INFO L138 Inliner]: procedures = 130, calls = 192, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1035 [2023-12-19 22:57:13,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 22:57:13,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 22:57:13,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 22:57:13,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 22:57:13,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:13,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:13,958 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:13,990 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 22:57:13,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:13,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:14,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:14,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:14,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:14,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:14,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 22:57:14,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 22:57:14,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 22:57:14,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 22:57:14,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (1/1) ... [2023-12-19 22:57:14,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 22:57:14,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:57:14,147 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 22:57:14,150 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 22:57:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-19 22:57:14,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-19 22:57:14,166 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-19 22:57:14,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-19 22:57:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-19 22:57:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-19 22:57:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-19 22:57:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-19 22:57:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-19 22:57:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-19 22:57:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-19 22:57:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-19 22:57:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-19 22:57:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-19 22:57:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2023-12-19 22:57:14,167 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2023-12-19 22:57:14,167 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-19 22:57:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-19 22:57:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 22:57:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-19 22:57:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-19 22:57:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-19 22:57:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-19 22:57:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-19 22:57:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-19 22:57:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-19 22:57:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-19 22:57:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-19 22:57:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-19 22:57:14,168 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-19 22:57:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-19 22:57:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-19 22:57:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-19 22:57:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 22:57:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 22:57:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 22:57:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 22:57:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-19 22:57:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-19 22:57:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 22:57:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 22:57:14,306 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 22:57:14,308 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 22:57:14,904 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 22:57:14,938 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 22:57:14,938 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 22:57:14,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:57:14 BoogieIcfgContainer [2023-12-19 22:57:14,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 22:57:14,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 22:57:14,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 22:57:14,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 22:57:14,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 10:57:13" (1/3) ... [2023-12-19 22:57:14,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426da5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:57:14, skipping insertion in model container [2023-12-19 22:57:14,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 10:57:13" (2/3) ... [2023-12-19 22:57:14,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426da5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 10:57:14, skipping insertion in model container [2023-12-19 22:57:14,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 10:57:14" (3/3) ... [2023-12-19 22:57:14,944 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product24.cil.c [2023-12-19 22:57:14,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 22:57:14,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 22:57:14,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 22:57:14,997 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;@64054a17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 22:57:14,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 22:57:15,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 292 states, 227 states have (on average 1.5991189427312775) internal successors, (363), 229 states have internal predecessors, (363), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 22:57:15,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 22:57:15,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:15,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:15,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:15,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1066125170, now seen corresponding path program 1 times [2023-12-19 22:57:15,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:15,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600401732] [2023-12-19 22:57:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:15,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:57:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:57:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:57:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 22:57:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-19 22:57:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:57:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 22:57:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:57:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:57:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 22:57:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 22:57:15,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:15,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600401732] [2023-12-19 22:57:15,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600401732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:57:15,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379600076] [2023-12-19 22:57:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:15,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:57:15,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:57:15,538 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 22:57:15,557 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 22:57:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:15,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 22:57:15,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:57:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 22:57:15,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:57:15,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379600076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:15,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:57:15,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-19 22:57:15,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995722293] [2023-12-19 22:57:15,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:15,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 22:57:15,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:15,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 22:57:15,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:57:15,842 INFO L87 Difference]: Start difference. First operand has 292 states, 227 states have (on average 1.5991189427312775) internal successors, (363), 229 states have internal predecessors, (363), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:15,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:15,925 INFO L93 Difference]: Finished difference Result 435 states and 666 transitions. [2023-12-19 22:57:15,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 22:57:15,927 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 98 [2023-12-19 22:57:15,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:15,939 INFO L225 Difference]: With dead ends: 435 [2023-12-19 22:57:15,939 INFO L226 Difference]: Without dead ends: 289 [2023-12-19 22:57:15,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 120 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 22:57:15,944 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:15,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 434 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:57:15,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-19 22:57:15,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-12-19 22:57:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 225 states have (on average 1.5822222222222222) internal successors, (356), 226 states have internal predecessors, (356), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-19 22:57:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 447 transitions. [2023-12-19 22:57:15,991 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 447 transitions. Word has length 98 [2023-12-19 22:57:15,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:15,992 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 447 transitions. [2023-12-19 22:57:15,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 447 transitions. [2023-12-19 22:57:15,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-19 22:57:15,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:15,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:16,004 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 22:57:16,207 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 22:57:16,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:16,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:16,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1766991533, now seen corresponding path program 1 times [2023-12-19 22:57:16,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:16,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493110797] [2023-12-19 22:57:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:16,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:57:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:57:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:57:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 22:57:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 22:57:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:57:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:57:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:57:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:57:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 22:57:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 22:57:16,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:16,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493110797] [2023-12-19 22:57:16,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493110797] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:57:16,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064805732] [2023-12-19 22:57:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:16,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:57:16,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:57:16,526 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 22:57:16,550 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 22:57:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:16,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 22:57:16,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:57:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 22:57:16,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:57:16,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064805732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:16,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:57:16,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-19 22:57:16,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325323544] [2023-12-19 22:57:16,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:16,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:57:16,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:57:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:57:16,840 INFO L87 Difference]: Start difference. First operand 289 states and 447 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:16,883 INFO L93 Difference]: Finished difference Result 431 states and 653 transitions. [2023-12-19 22:57:16,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:57:16,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 99 [2023-12-19 22:57:16,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:16,886 INFO L225 Difference]: With dead ends: 431 [2023-12-19 22:57:16,886 INFO L226 Difference]: Without dead ends: 291 [2023-12-19 22:57:16,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:57:16,888 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 0 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:16,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 861 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:57:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-12-19 22:57:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2023-12-19 22:57:16,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 227 states have (on average 1.577092511013216) internal successors, (358), 228 states have internal predecessors, (358), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-19 22:57:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 449 transitions. [2023-12-19 22:57:16,903 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 449 transitions. Word has length 99 [2023-12-19 22:57:16,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:16,903 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 449 transitions. [2023-12-19 22:57:16,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 449 transitions. [2023-12-19 22:57:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-19 22:57:16,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:16,906 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:16,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 22:57:17,113 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 22:57:17,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:17,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:17,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1352094134, now seen corresponding path program 1 times [2023-12-19 22:57:17,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:17,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175284312] [2023-12-19 22:57:17,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:17,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:57:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:57:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:57:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 22:57:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:57:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:57:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:57:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:57:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 22:57:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 22:57:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,306 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 22:57:17,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:17,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175284312] [2023-12-19 22:57:17,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175284312] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:57:17,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043352470] [2023-12-19 22:57:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:17,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:57:17,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:57:17,318 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 22:57:17,339 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 22:57:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:57:17,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:57:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-19 22:57:17,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:57:17,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043352470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:17,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:57:17,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-19 22:57:17,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675154557] [2023-12-19 22:57:17,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:17,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 22:57:17,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:17,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 22:57:17,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-19 22:57:17,571 INFO L87 Difference]: Start difference. First operand 291 states and 449 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:17,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:17,613 INFO L93 Difference]: Finished difference Result 616 states and 964 transitions. [2023-12-19 22:57:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 22:57:17,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2023-12-19 22:57:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:17,615 INFO L225 Difference]: With dead ends: 616 [2023-12-19 22:57:17,615 INFO L226 Difference]: Without dead ends: 347 [2023-12-19 22:57:17,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 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 22:57:17,617 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 109 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:17,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 827 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 22:57:17,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-19 22:57:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 342. [2023-12-19 22:57:17,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 267 states have (on average 1.591760299625468) internal successors, (425), 268 states have internal predecessors, (425), 57 states have call successors, (57), 17 states have call predecessors, (57), 17 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-19 22:57:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 538 transitions. [2023-12-19 22:57:17,637 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 538 transitions. Word has length 106 [2023-12-19 22:57:17,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:17,637 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 538 transitions. [2023-12-19 22:57:17,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:17,637 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 538 transitions. [2023-12-19 22:57:17,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-19 22:57:17,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:17,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:17,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 22:57:17,848 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 22:57:17,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:17,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1457005129, now seen corresponding path program 1 times [2023-12-19 22:57:17,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:17,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871892625] [2023-12-19 22:57:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:17,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 22:57:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 22:57:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:17,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 22:57:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 22:57:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:57:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 22:57:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 22:57:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:57:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:57:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 22:57:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,017 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 22:57:18,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:18,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871892625] [2023-12-19 22:57:18,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871892625] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:57:18,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320425728] [2023-12-19 22:57:18,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:18,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:57:18,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:57:18,018 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 22:57:18,040 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 22:57:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 22:57:18,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:57:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 22:57:18,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:57:18,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320425728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:18,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:57:18,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-19 22:57:18,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678108673] [2023-12-19 22:57:18,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:18,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:57:18,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:18,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:57:18,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:57:18,300 INFO L87 Difference]: Start difference. First operand 342 states and 538 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:57:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:18,404 INFO L93 Difference]: Finished difference Result 679 states and 1070 transitions. [2023-12-19 22:57:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:57:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-12-19 22:57:18,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:18,408 INFO L225 Difference]: With dead ends: 679 [2023-12-19 22:57:18,409 INFO L226 Difference]: Without dead ends: 344 [2023-12-19 22:57:18,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 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 22:57:18,414 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 8 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1677 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 22:57:18,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1677 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:57:18,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-19 22:57:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2023-12-19 22:57:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 268 states have (on average 1.5895522388059702) internal successors, (426), 270 states have internal predecessors, (426), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2023-12-19 22:57:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 541 transitions. [2023-12-19 22:57:18,438 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 541 transitions. Word has length 107 [2023-12-19 22:57:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:18,439 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 541 transitions. [2023-12-19 22:57:18,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:57:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 541 transitions. [2023-12-19 22:57:18,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 22:57:18,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:18,443 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 22:57:18,452 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 22:57:18,653 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 22:57:18,655 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:18,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1123160546, now seen corresponding path program 1 times [2023-12-19 22:57:18,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:18,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654467232] [2023-12-19 22:57:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:18,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 22:57:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-19 22:57:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 22:57:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:57:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:57:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:57:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 22:57:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 22:57:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 22:57:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 22:57:18,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:18,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654467232] [2023-12-19 22:57:18,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654467232] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:57:18,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506337831] [2023-12-19 22:57:18,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:18,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:57:18,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:57:18,883 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 22:57:18,887 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 22:57:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 22:57:19,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:57:19,142 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-19 22:57:19,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:57:19,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506337831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:19,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:57:19,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-19 22:57:19,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070423713] [2023-12-19 22:57:19,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:19,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:57:19,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:19,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:57:19,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:57:19,144 INFO L87 Difference]: Start difference. First operand 344 states and 541 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:57:19,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:19,223 INFO L93 Difference]: Finished difference Result 681 states and 1075 transitions. [2023-12-19 22:57:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:57:19,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2023-12-19 22:57:19,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:19,226 INFO L225 Difference]: With dead ends: 681 [2023-12-19 22:57:19,226 INFO L226 Difference]: Without dead ends: 346 [2023-12-19 22:57:19,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 126 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 22:57:19,228 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 8 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:19,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1663 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:57:19,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-19 22:57:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2023-12-19 22:57:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 269 states have (on average 1.587360594795539) internal successors, (427), 272 states have internal predecessors, (427), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-12-19 22:57:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 547 transitions. [2023-12-19 22:57:19,241 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 547 transitions. Word has length 108 [2023-12-19 22:57:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:19,241 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 547 transitions. [2023-12-19 22:57:19,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:57:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 547 transitions. [2023-12-19 22:57:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 22:57:19,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:19,243 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] [2023-12-19 22:57:19,256 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 22:57:19,450 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 22:57:19,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:19,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:19,451 INFO L85 PathProgramCache]: Analyzing trace with hash -950473715, now seen corresponding path program 1 times [2023-12-19 22:57:19,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:19,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292584930] [2023-12-19 22:57:19,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:19,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 22:57:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 22:57:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 22:57:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:57:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 22:57:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 22:57:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 22:57:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:57:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 22:57:19,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:19,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292584930] [2023-12-19 22:57:19,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292584930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:19,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:19,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:57:19,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237971079] [2023-12-19 22:57:19,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:19,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:57:19,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:19,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:57:19,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:57:19,585 INFO L87 Difference]: Start difference. First operand 346 states and 547 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:57:21,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:21,035 INFO L93 Difference]: Finished difference Result 844 states and 1347 transitions. [2023-12-19 22:57:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 22:57:21,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2023-12-19 22:57:21,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:21,038 INFO L225 Difference]: With dead ends: 844 [2023-12-19 22:57:21,038 INFO L226 Difference]: Without dead ends: 517 [2023-12-19 22:57:21,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 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 22:57:21,039 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1012 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:21,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1011 Invalid, 2774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 22:57:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-12-19 22:57:21,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 346. [2023-12-19 22:57:21,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 269 states have (on average 1.587360594795539) internal successors, (427), 272 states have internal predecessors, (427), 57 states have call successors, (57), 17 states have call predecessors, (57), 19 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2023-12-19 22:57:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 546 transitions. [2023-12-19 22:57:21,076 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 546 transitions. Word has length 109 [2023-12-19 22:57:21,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:21,076 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 546 transitions. [2023-12-19 22:57:21,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:57:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 546 transitions. [2023-12-19 22:57:21,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 22:57:21,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:21,079 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] [2023-12-19 22:57:21,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 22:57:21,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:21,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash -94936170, now seen corresponding path program 2 times [2023-12-19 22:57:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:21,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705496347] [2023-12-19 22:57:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:21,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 22:57:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 22:57:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 22:57:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:57:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 22:57:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 22:57:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 22:57:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 22:57:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 22:57:21,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:21,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705496347] [2023-12-19 22:57:21,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705496347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:21,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:21,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:57:21,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169711812] [2023-12-19 22:57:21,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:21,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:57:21,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:21,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:57:21,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:57:21,251 INFO L87 Difference]: Start difference. First operand 346 states and 546 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:57:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:22,736 INFO L93 Difference]: Finished difference Result 846 states and 1350 transitions. [2023-12-19 22:57:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 22:57:22,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2023-12-19 22:57:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:22,741 INFO L225 Difference]: With dead ends: 846 [2023-12-19 22:57:22,741 INFO L226 Difference]: Without dead ends: 519 [2023-12-19 22:57:22,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 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 22:57:22,743 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1005 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:22,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1011 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 22:57:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-12-19 22:57:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 348. [2023-12-19 22:57:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 270 states have (on average 1.5851851851851853) internal successors, (428), 274 states have internal predecessors, (428), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2023-12-19 22:57:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 549 transitions. [2023-12-19 22:57:22,765 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 549 transitions. Word has length 110 [2023-12-19 22:57:22,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:22,765 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 549 transitions. [2023-12-19 22:57:22,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:57:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 549 transitions. [2023-12-19 22:57:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 22:57:22,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:22,767 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:22,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 22:57:22,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:22,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:22,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1497763060, now seen corresponding path program 1 times [2023-12-19 22:57:22,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:22,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970380052] [2023-12-19 22:57:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:22,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:57:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:57:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:57:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 22:57:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:57:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:57:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 22:57:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 22:57:22,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:22,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970380052] [2023-12-19 22:57:22,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970380052] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:22,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:22,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 22:57:22,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128039092] [2023-12-19 22:57:22,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:22,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 22:57:22,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:22,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 22:57:22,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 22:57:22,900 INFO L87 Difference]: Start difference. First operand 348 states and 549 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:57:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:24,407 INFO L93 Difference]: Finished difference Result 846 states and 1349 transitions. [2023-12-19 22:57:24,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 22:57:24,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2023-12-19 22:57:24,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:24,410 INFO L225 Difference]: With dead ends: 846 [2023-12-19 22:57:24,410 INFO L226 Difference]: Without dead ends: 519 [2023-12-19 22:57:24,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 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 22:57:24,411 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 984 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:24,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1010 Invalid, 2810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 22:57:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-12-19 22:57:24,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 348. [2023-12-19 22:57:24,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 270 states have (on average 1.5851851851851853) internal successors, (428), 274 states have internal predecessors, (428), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2023-12-19 22:57:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 549 transitions. [2023-12-19 22:57:24,428 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 549 transitions. Word has length 111 [2023-12-19 22:57:24,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:24,428 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 549 transitions. [2023-12-19 22:57:24,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-19 22:57:24,428 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 549 transitions. [2023-12-19 22:57:24,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 22:57:24,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:24,429 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:24,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 22:57:24,430 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:24,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:24,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1257523314, now seen corresponding path program 1 times [2023-12-19 22:57:24,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:24,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211349956] [2023-12-19 22:57:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:24,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 22:57:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 22:57:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:57:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 22:57:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:57:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:57:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 22:57:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 22:57:24,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:24,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211349956] [2023-12-19 22:57:24,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211349956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:24,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:24,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:57:24,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487697356] [2023-12-19 22:57:24,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:24,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:57:24,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:24,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:57:24,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:57:24,613 INFO L87 Difference]: Start difference. First operand 348 states and 549 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 22:57:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:26,692 INFO L93 Difference]: Finished difference Result 844 states and 1344 transitions. [2023-12-19 22:57:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 22:57:26,693 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 111 [2023-12-19 22:57:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:26,695 INFO L225 Difference]: With dead ends: 844 [2023-12-19 22:57:26,695 INFO L226 Difference]: Without dead ends: 519 [2023-12-19 22:57:26,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 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 22:57:26,697 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1024 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 3966 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 4280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 3966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:26,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1397 Invalid, 4280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 3966 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 22:57:26,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-12-19 22:57:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 348. [2023-12-19 22:57:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 270 states have (on average 1.5851851851851853) internal successors, (428), 274 states have internal predecessors, (428), 57 states have call successors, (57), 17 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2023-12-19 22:57:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 548 transitions. [2023-12-19 22:57:26,729 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 548 transitions. Word has length 111 [2023-12-19 22:57:26,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:26,730 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 548 transitions. [2023-12-19 22:57:26,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 8 states have internal predecessors, (71), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 22:57:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 548 transitions. [2023-12-19 22:57:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-19 22:57:26,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:26,731 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] [2023-12-19 22:57:26,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 22:57:26,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:26,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:26,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1303733373, now seen corresponding path program 2 times [2023-12-19 22:57:26,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:26,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956634041] [2023-12-19 22:57:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:26,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-19 22:57:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:57:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:57:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:57:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:57:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 22:57:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:57:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 22:57:26,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:26,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956634041] [2023-12-19 22:57:26,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956634041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:26,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:26,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 22:57:26,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716427690] [2023-12-19 22:57:26,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:26,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:57:26,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:26,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:57:26,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:57:26,921 INFO L87 Difference]: Start difference. First operand 348 states and 548 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 22:57:28,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:28,989 INFO L93 Difference]: Finished difference Result 846 states and 1350 transitions. [2023-12-19 22:57:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 22:57:28,990 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 112 [2023-12-19 22:57:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:28,992 INFO L225 Difference]: With dead ends: 846 [2023-12-19 22:57:28,992 INFO L226 Difference]: Without dead ends: 521 [2023-12-19 22:57:28,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 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 22:57:28,994 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1014 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 4002 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 4315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 4002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:28,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1397 Invalid, 4315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 4002 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 22:57:28,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-12-19 22:57:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 350. [2023-12-19 22:57:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 271 states have (on average 1.5830258302583027) internal successors, (429), 276 states have internal predecessors, (429), 57 states have call successors, (57), 17 states have call predecessors, (57), 21 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2023-12-19 22:57:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 554 transitions. [2023-12-19 22:57:29,009 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 554 transitions. Word has length 112 [2023-12-19 22:57:29,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:29,009 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 554 transitions. [2023-12-19 22:57:29,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-19 22:57:29,009 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 554 transitions. [2023-12-19 22:57:29,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 22:57:29,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:29,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:29,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 22:57:29,011 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:29,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:29,011 INFO L85 PathProgramCache]: Analyzing trace with hash 419048855, now seen corresponding path program 1 times [2023-12-19 22:57:29,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:29,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667505171] [2023-12-19 22:57:29,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:29,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-19 22:57:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:57:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 22:57:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:57:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 22:57:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 22:57:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 22:57:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 22:57:29,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:29,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667505171] [2023-12-19 22:57:29,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667505171] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:57:29,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581262683] [2023-12-19 22:57:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:29,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:57:29,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:57:29,168 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 22:57:29,212 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 22:57:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:29,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 22:57:29,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:57:29,438 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 22:57:29,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:57:29,498 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 22:57:29,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581262683] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:57:29,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:57:29,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-12-19 22:57:29,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009314826] [2023-12-19 22:57:29,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:57:29,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 22:57:29,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:29,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 22:57:29,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-19 22:57:29,501 INFO L87 Difference]: Start difference. First operand 350 states and 554 transitions. Second operand has 15 states, 14 states have (on average 8.0) internal successors, (112), 11 states have internal predecessors, (112), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-19 22:57:32,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:32,000 INFO L93 Difference]: Finished difference Result 1195 states and 1996 transitions. [2023-12-19 22:57:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 22:57:32,001 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.0) internal successors, (112), 11 states have internal predecessors, (112), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 113 [2023-12-19 22:57:32,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:32,004 INFO L225 Difference]: With dead ends: 1195 [2023-12-19 22:57:32,004 INFO L226 Difference]: Without dead ends: 871 [2023-12-19 22:57:32,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 248 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 22:57:32,006 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 2047 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 4669 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 5281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 4669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:32,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 1595 Invalid, 5281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 4669 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 22:57:32,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-12-19 22:57:32,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 685. [2023-12-19 22:57:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 542 states have (on average 1.6273062730627306) internal successors, (882), 547 states have internal predecessors, (882), 121 states have call successors, (121), 17 states have call predecessors, (121), 21 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2023-12-19 22:57:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1145 transitions. [2023-12-19 22:57:32,031 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1145 transitions. Word has length 113 [2023-12-19 22:57:32,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:32,031 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1145 transitions. [2023-12-19 22:57:32,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.0) internal successors, (112), 11 states have internal predecessors, (112), 4 states have call successors, (32), 6 states have call predecessors, (32), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-19 22:57:32,032 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1145 transitions. [2023-12-19 22:57:32,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 22:57:32,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:32,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:32,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 22:57:32,241 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 22:57:32,241 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:32,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:32,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1932855846, now seen corresponding path program 1 times [2023-12-19 22:57:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:32,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580378229] [2023-12-19 22:57:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:32,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 22:57:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:57:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 22:57:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:57:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 22:57:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 22:57:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 22:57:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:32,311 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 22:57:32,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:32,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580378229] [2023-12-19 22:57:32,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580378229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:32,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:32,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:57:32,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787363944] [2023-12-19 22:57:32,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:32,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:57:32,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:57:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:57:32,313 INFO L87 Difference]: Start difference. First operand 685 states and 1145 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:33,494 INFO L93 Difference]: Finished difference Result 1790 states and 3055 transitions. [2023-12-19 22:57:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:57:33,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2023-12-19 22:57:33,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:33,502 INFO L225 Difference]: With dead ends: 1790 [2023-12-19 22:57:33,502 INFO L226 Difference]: Without dead ends: 1173 [2023-12-19 22:57:33,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 22:57:33,507 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1088 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:33,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 768 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 22:57:33,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2023-12-19 22:57:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 997. [2023-12-19 22:57:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 790 states have (on average 1.6379746835443039) internal successors, (1294), 795 states have internal predecessors, (1294), 185 states have call successors, (185), 17 states have call predecessors, (185), 21 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2023-12-19 22:57:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1695 transitions. [2023-12-19 22:57:33,541 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1695 transitions. Word has length 117 [2023-12-19 22:57:33,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:33,542 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1695 transitions. [2023-12-19 22:57:33,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:33,542 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1695 transitions. [2023-12-19 22:57:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-19 22:57:33,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:33,545 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:33,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 22:57:33,546 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:33,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:33,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1854012316, now seen corresponding path program 1 times [2023-12-19 22:57:33,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:33,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092793750] [2023-12-19 22:57:33,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:33,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 22:57:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 22:57:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 22:57:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:57:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 22:57:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 22:57:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 22:57:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:33,648 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 22:57:33,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:33,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092793750] [2023-12-19 22:57:33,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092793750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:33,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:57:33,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299332827] [2023-12-19 22:57:33,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:33,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:57:33,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:33,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:57:33,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:57:33,650 INFO L87 Difference]: Start difference. First operand 997 states and 1695 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:34,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:34,613 INFO L93 Difference]: Finished difference Result 2559 states and 4403 transitions. [2023-12-19 22:57:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:57:34,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-12-19 22:57:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:34,622 INFO L225 Difference]: With dead ends: 2559 [2023-12-19 22:57:34,622 INFO L226 Difference]: Without dead ends: 1680 [2023-12-19 22:57:34,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 22:57:34,628 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1090 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:34,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 745 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 22:57:34,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2023-12-19 22:57:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1504. [2023-12-19 22:57:34,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1202 states have (on average 1.642262895174709) internal successors, (1974), 1207 states have internal predecessors, (1974), 280 states have call successors, (280), 17 states have call predecessors, (280), 21 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2023-12-19 22:57:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2565 transitions. [2023-12-19 22:57:34,683 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2565 transitions. Word has length 118 [2023-12-19 22:57:34,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:34,684 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 2565 transitions. [2023-12-19 22:57:34,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2565 transitions. [2023-12-19 22:57:34,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 22:57:34,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:34,690 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:34,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 22:57:34,690 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:34,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:34,690 INFO L85 PathProgramCache]: Analyzing trace with hash -649150028, now seen corresponding path program 1 times [2023-12-19 22:57:34,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:34,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052779576] [2023-12-19 22:57:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:34,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 22:57:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:57:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 22:57:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 22:57:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 22:57:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 22:57:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:57:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:34,755 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 22:57:34,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:34,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052779576] [2023-12-19 22:57:34,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052779576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:34,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:34,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:57:34,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660557504] [2023-12-19 22:57:34,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:34,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:57:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:57:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:57:34,757 INFO L87 Difference]: Start difference. First operand 1504 states and 2565 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:35,744 INFO L93 Difference]: Finished difference Result 3705 states and 6428 transitions. [2023-12-19 22:57:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:57:35,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2023-12-19 22:57:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:35,754 INFO L225 Difference]: With dead ends: 3705 [2023-12-19 22:57:35,754 INFO L226 Difference]: Without dead ends: 2447 [2023-12-19 22:57:35,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 22:57:35,758 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1091 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:35,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 739 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 22:57:35,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2023-12-19 22:57:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2271. [2023-12-19 22:57:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 1846 states have (on average 1.6462621885157096) internal successors, (3039), 1851 states have internal predecessors, (3039), 403 states have call successors, (403), 17 states have call predecessors, (403), 21 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2023-12-19 22:57:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3892 transitions. [2023-12-19 22:57:35,829 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3892 transitions. Word has length 119 [2023-12-19 22:57:35,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:35,829 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 3892 transitions. [2023-12-19 22:57:35,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:35,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3892 transitions. [2023-12-19 22:57:35,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 22:57:35,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:35,837 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:35,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 22:57:35,837 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:35,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:35,837 INFO L85 PathProgramCache]: Analyzing trace with hash -631677827, now seen corresponding path program 1 times [2023-12-19 22:57:35,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:35,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407556980] [2023-12-19 22:57:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:35,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 22:57:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:57:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 22:57:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 22:57:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:57:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:57:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 22:57:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:35,909 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 22:57:35,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:35,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407556980] [2023-12-19 22:57:35,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407556980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:35,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:35,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:57:35,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478759508] [2023-12-19 22:57:35,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:35,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:57:35,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:35,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:57:35,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:57:35,910 INFO L87 Difference]: Start difference. First operand 2271 states and 3892 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:37,082 INFO L93 Difference]: Finished difference Result 5487 states and 9586 transitions. [2023-12-19 22:57:37,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:57:37,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2023-12-19 22:57:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:37,095 INFO L225 Difference]: With dead ends: 5487 [2023-12-19 22:57:37,095 INFO L226 Difference]: Without dead ends: 3671 [2023-12-19 22:57:37,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 22:57:37,100 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1110 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:37,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 737 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 22:57:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2023-12-19 22:57:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3495. [2023-12-19 22:57:37,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 2891 states have (on average 1.6489104116222761) internal successors, (4767), 2896 states have internal predecessors, (4767), 582 states have call successors, (582), 17 states have call predecessors, (582), 21 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2023-12-19 22:57:37,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 6004 transitions. [2023-12-19 22:57:37,199 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 6004 transitions. Word has length 120 [2023-12-19 22:57:37,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:37,199 INFO L495 AbstractCegarLoop]: Abstraction has 3495 states and 6004 transitions. [2023-12-19 22:57:37,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:37,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 6004 transitions. [2023-12-19 22:57:37,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-19 22:57:37,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:37,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:37,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 22:57:37,209 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:37,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:37,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1281470960, now seen corresponding path program 1 times [2023-12-19 22:57:37,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:37,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948843760] [2023-12-19 22:57:37,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:37,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 22:57:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 22:57:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 22:57:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:57:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 22:57:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 22:57:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:57:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:37,270 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 22:57:37,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:37,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948843760] [2023-12-19 22:57:37,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948843760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:37,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:37,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:57:37,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094923623] [2023-12-19 22:57:37,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:37,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:57:37,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:37,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:57:37,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:57:37,271 INFO L87 Difference]: Start difference. First operand 3495 states and 6004 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:38,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:38,587 INFO L93 Difference]: Finished difference Result 8466 states and 14826 transitions. [2023-12-19 22:57:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:57:38,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2023-12-19 22:57:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:38,608 INFO L225 Difference]: With dead ends: 8466 [2023-12-19 22:57:38,608 INFO L226 Difference]: Without dead ends: 5729 [2023-12-19 22:57:38,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 22:57:38,615 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 1070 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:38,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 774 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 22:57:38,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5729 states. [2023-12-19 22:57:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5729 to 5553. [2023-12-19 22:57:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 4573 states have (on average 1.6378744806472776) internal successors, (7490), 4578 states have internal predecessors, (7490), 958 states have call successors, (958), 17 states have call predecessors, (958), 21 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2023-12-19 22:57:38,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 9523 transitions. [2023-12-19 22:57:38,784 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 9523 transitions. Word has length 121 [2023-12-19 22:57:38,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:38,784 INFO L495 AbstractCegarLoop]: Abstraction has 5553 states and 9523 transitions. [2023-12-19 22:57:38,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 9523 transitions. [2023-12-19 22:57:38,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-19 22:57:38,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:38,798 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:38,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 22:57:38,798 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:38,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:38,800 INFO L85 PathProgramCache]: Analyzing trace with hash 503783489, now seen corresponding path program 1 times [2023-12-19 22:57:38,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:38,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414617949] [2023-12-19 22:57:38,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:38,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 22:57:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:57:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 22:57:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:57:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 22:57:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 22:57:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 22:57:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:38,868 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 22:57:38,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414617949] [2023-12-19 22:57:38,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414617949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:38,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:38,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:57:38,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838519860] [2023-12-19 22:57:38,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:38,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:57:38,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:38,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:57:38,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:57:38,869 INFO L87 Difference]: Start difference. First operand 5553 states and 9523 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:40,243 INFO L93 Difference]: Finished difference Result 13827 states and 24183 transitions. [2023-12-19 22:57:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:57:40,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-12-19 22:57:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:40,275 INFO L225 Difference]: With dead ends: 13827 [2023-12-19 22:57:40,276 INFO L226 Difference]: Without dead ends: 9418 [2023-12-19 22:57:40,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 22:57:40,289 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1099 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:40,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 737 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 22:57:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9418 states. [2023-12-19 22:57:40,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9418 to 9242. [2023-12-19 22:57:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9242 states, 7656 states have (on average 1.6353187042842214) internal successors, (12520), 7661 states have internal predecessors, (12520), 1564 states have call successors, (1564), 17 states have call predecessors, (1564), 21 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2023-12-19 22:57:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9242 states to 9242 states and 15843 transitions. [2023-12-19 22:57:40,655 INFO L78 Accepts]: Start accepts. Automaton has 9242 states and 15843 transitions. Word has length 122 [2023-12-19 22:57:40,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:40,656 INFO L495 AbstractCegarLoop]: Abstraction has 9242 states and 15843 transitions. [2023-12-19 22:57:40,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 9242 states and 15843 transitions. [2023-12-19 22:57:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 22:57:40,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:40,672 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:40,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 22:57:40,672 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:40,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1017406498, now seen corresponding path program 1 times [2023-12-19 22:57:40,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:40,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723685232] [2023-12-19 22:57:40,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:40,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 22:57:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:57:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 22:57:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 22:57:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 22:57:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 22:57:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 22:57:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:40,746 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 22:57:40,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:40,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723685232] [2023-12-19 22:57:40,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723685232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:40,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:40,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:57:40,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270676000] [2023-12-19 22:57:40,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:40,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:57:40,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:57:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:57:40,749 INFO L87 Difference]: Start difference. First operand 9242 states and 15843 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:42,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:42,130 INFO L93 Difference]: Finished difference Result 24019 states and 41947 transitions. [2023-12-19 22:57:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:57:42,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2023-12-19 22:57:42,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:42,248 INFO L225 Difference]: With dead ends: 24019 [2023-12-19 22:57:42,249 INFO L226 Difference]: Without dead ends: 16378 [2023-12-19 22:57:42,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 22:57:42,286 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 1099 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:42,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 772 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 22:57:42,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16378 states. [2023-12-19 22:57:42,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16378 to 16202. [2023-12-19 22:57:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16202 states, 13413 states have (on average 1.62625810780586) internal successors, (21813), 13418 states have internal predecessors, (21813), 2767 states have call successors, (2767), 17 states have call predecessors, (2767), 21 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2023-12-19 22:57:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16202 states to 16202 states and 27686 transitions. [2023-12-19 22:57:43,019 INFO L78 Accepts]: Start accepts. Automaton has 16202 states and 27686 transitions. Word has length 123 [2023-12-19 22:57:43,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:43,020 INFO L495 AbstractCegarLoop]: Abstraction has 16202 states and 27686 transitions. [2023-12-19 22:57:43,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:43,020 INFO L276 IsEmpty]: Start isEmpty. Operand 16202 states and 27686 transitions. [2023-12-19 22:57:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-19 22:57:43,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:43,047 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:43,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 22:57:43,047 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:43,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1177990590, now seen corresponding path program 1 times [2023-12-19 22:57:43,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:43,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390067474] [2023-12-19 22:57:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:43,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 22:57:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:57:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 22:57:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 22:57:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 22:57:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 22:57:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 22:57:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:43,131 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 22:57:43,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:43,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390067474] [2023-12-19 22:57:43,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390067474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:43,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:43,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:57:43,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067435075] [2023-12-19 22:57:43,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:43,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:57:43,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:43,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:57:43,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:57:43,134 INFO L87 Difference]: Start difference. First operand 16202 states and 27686 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:44,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:44,797 INFO L93 Difference]: Finished difference Result 42994 states and 74959 transitions. [2023-12-19 22:57:44,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:57:44,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2023-12-19 22:57:44,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:44,883 INFO L225 Difference]: With dead ends: 42994 [2023-12-19 22:57:44,883 INFO L226 Difference]: Without dead ends: 29041 [2023-12-19 22:57:44,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 22:57:44,911 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1091 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:44,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 738 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 22:57:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29041 states. [2023-12-19 22:57:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29041 to 28865. [2023-12-19 22:57:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28865 states, 24037 states have (on average 1.6224570453883596) internal successors, (38999), 24042 states have internal predecessors, (38999), 4806 states have call successors, (4806), 17 states have call predecessors, (4806), 21 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2023-12-19 22:57:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28865 states to 28865 states and 49224 transitions. [2023-12-19 22:57:45,777 INFO L78 Accepts]: Start accepts. Automaton has 28865 states and 49224 transitions. Word has length 124 [2023-12-19 22:57:45,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:45,777 INFO L495 AbstractCegarLoop]: Abstraction has 28865 states and 49224 transitions. [2023-12-19 22:57:45,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:45,778 INFO L276 IsEmpty]: Start isEmpty. Operand 28865 states and 49224 transitions. [2023-12-19 22:57:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 22:57:45,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:45,802 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:45,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 22:57:45,802 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:45,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:45,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1883952704, now seen corresponding path program 1 times [2023-12-19 22:57:45,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:45,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001357906] [2023-12-19 22:57:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:45,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 22:57:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 22:57:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 22:57:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 22:57:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 22:57:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 22:57:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 22:57:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:45,868 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 22:57:45,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001357906] [2023-12-19 22:57:45,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001357906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:45,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:45,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:57:45,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952917201] [2023-12-19 22:57:45,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:45,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:57:45,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:57:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:57:45,870 INFO L87 Difference]: Start difference. First operand 28865 states and 49224 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:48,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:48,074 INFO L93 Difference]: Finished difference Result 78766 states and 136518 transitions. [2023-12-19 22:57:48,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:57:48,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2023-12-19 22:57:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:48,245 INFO L225 Difference]: With dead ends: 78766 [2023-12-19 22:57:48,246 INFO L226 Difference]: Without dead ends: 52929 [2023-12-19 22:57:48,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:57:48,299 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1092 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:48,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 743 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 22:57:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52929 states. [2023-12-19 22:57:49,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52929 to 52753. [2023-12-19 22:57:50,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52753 states, 44210 states have (on average 1.6174847319610948) internal successors, (71509), 44215 states have internal predecessors, (71509), 8521 states have call successors, (8521), 17 states have call predecessors, (8521), 21 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2023-12-19 22:57:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52753 states to 52753 states and 89696 transitions. [2023-12-19 22:57:50,148 INFO L78 Accepts]: Start accepts. Automaton has 52753 states and 89696 transitions. Word has length 125 [2023-12-19 22:57:50,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:50,149 INFO L495 AbstractCegarLoop]: Abstraction has 52753 states and 89696 transitions. [2023-12-19 22:57:50,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:50,149 INFO L276 IsEmpty]: Start isEmpty. Operand 52753 states and 89696 transitions. [2023-12-19 22:57:50,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 22:57:50,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:50,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:50,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 22:57:50,177 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:50,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:50,177 INFO L85 PathProgramCache]: Analyzing trace with hash -336977822, now seen corresponding path program 1 times [2023-12-19 22:57:50,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:50,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086360700] [2023-12-19 22:57:50,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:50,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 22:57:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 22:57:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 22:57:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 22:57:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 22:57:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 22:57:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 22:57:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:50,248 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 22:57:50,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:50,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086360700] [2023-12-19 22:57:50,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086360700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:57:50,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:57:50,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 22:57:50,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873273090] [2023-12-19 22:57:50,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:57:50,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 22:57:50,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:50,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 22:57:50,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 22:57:50,250 INFO L87 Difference]: Start difference. First operand 52753 states and 89696 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:57:53,374 INFO L93 Difference]: Finished difference Result 98541 states and 171223 transitions. [2023-12-19 22:57:53,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 22:57:53,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2023-12-19 22:57:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:57:53,690 INFO L225 Difference]: With dead ends: 98541 [2023-12-19 22:57:53,690 INFO L226 Difference]: Without dead ends: 98401 [2023-12-19 22:57:53,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 22:57:53,730 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1092 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 22:57:53,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 737 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 22:57:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98401 states. [2023-12-19 22:57:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98401 to 98225. [2023-12-19 22:57:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98225 states, 82883 states have (on average 1.6111627233570214) internal successors, (133538), 82888 states have internal predecessors, (133538), 15320 states have call successors, (15320), 17 states have call predecessors, (15320), 21 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2023-12-19 22:57:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98225 states to 98225 states and 166369 transitions. [2023-12-19 22:57:56,859 INFO L78 Accepts]: Start accepts. Automaton has 98225 states and 166369 transitions. Word has length 126 [2023-12-19 22:57:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:57:56,859 INFO L495 AbstractCegarLoop]: Abstraction has 98225 states and 166369 transitions. [2023-12-19 22:57:56,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 22:57:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 98225 states and 166369 transitions. [2023-12-19 22:57:56,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-19 22:57:56,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:57:56,895 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:57:56,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 22:57:56,895 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:57:56,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:57:56,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1242490815, now seen corresponding path program 1 times [2023-12-19 22:57:56,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:57:56,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578485676] [2023-12-19 22:57:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:56,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:57:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:57:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:57:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:57:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:57:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:57:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:57:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:57:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 22:57:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 22:57:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 22:57:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 22:57:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 22:57:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 22:57:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 22:57:57,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:57:57,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578485676] [2023-12-19 22:57:57,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578485676] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:57:57,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431493540] [2023-12-19 22:57:57,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:57:57,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:57:57,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:57:57,061 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 22:57:57,076 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 22:57:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:57:57,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 22:57:57,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:57:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 22:57:57,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 22:57:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 22:57:57,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431493540] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 22:57:57,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 22:57:57,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2023-12-19 22:57:57,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659682742] [2023-12-19 22:57:57,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 22:57:57,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-19 22:57:57,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:57:57,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-19 22:57:57,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2023-12-19 22:57:57,674 INFO L87 Difference]: Start difference. First operand 98225 states and 166369 transitions. Second operand has 22 states, 21 states have (on average 9.857142857142858) internal successors, (207), 17 states have internal predecessors, (207), 4 states have call successors, (42), 10 states have call predecessors, (42), 8 states have return successors, (35), 5 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-19 22:58:07,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:58:07,228 INFO L93 Difference]: Finished difference Result 197178 states and 344805 transitions. [2023-12-19 22:58:07,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-19 22:58:07,228 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 9.857142857142858) internal successors, (207), 17 states have internal predecessors, (207), 4 states have call successors, (42), 10 states have call predecessors, (42), 8 states have return successors, (35), 5 states have call predecessors, (35), 4 states have call successors, (35) Word has length 127 [2023-12-19 22:58:07,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:58:08,156 INFO L225 Difference]: With dead ends: 197178 [2023-12-19 22:58:08,156 INFO L226 Difference]: Without dead ends: 197043 [2023-12-19 22:58:08,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=828, Invalid=3462, Unknown=0, NotChecked=0, Total=4290 [2023-12-19 22:58:08,239 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 3783 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 8786 mSolverCounterSat, 1041 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3808 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 9827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1041 IncrementalHoareTripleChecker+Valid, 8786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:58:08,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3808 Valid, 2168 Invalid, 9827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1041 Valid, 8786 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 22:58:08,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197043 states. [2023-12-19 22:58:15,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197043 to 196455. [2023-12-19 22:58:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196455 states, 165773 states have (on average 1.6111550131806749) internal successors, (267086), 165780 states have internal predecessors, (267086), 30638 states have call successors, (30638), 36 states have call predecessors, (30638), 43 states have return successors, (37200), 30638 states have call predecessors, (37200), 30636 states have call successors, (37200) [2023-12-19 22:58:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196455 states to 196455 states and 334924 transitions. [2023-12-19 22:58:17,050 INFO L78 Accepts]: Start accepts. Automaton has 196455 states and 334924 transitions. Word has length 127 [2023-12-19 22:58:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:58:17,050 INFO L495 AbstractCegarLoop]: Abstraction has 196455 states and 334924 transitions. [2023-12-19 22:58:17,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 9.857142857142858) internal successors, (207), 17 states have internal predecessors, (207), 4 states have call successors, (42), 10 states have call predecessors, (42), 8 states have return successors, (35), 5 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-19 22:58:17,051 INFO L276 IsEmpty]: Start isEmpty. Operand 196455 states and 334924 transitions. [2023-12-19 22:58:17,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 22:58:17,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:58:17,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:58:17,184 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 22:58:17,372 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 22:58:17,373 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:58:17,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:58:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash -980819208, now seen corresponding path program 1 times [2023-12-19 22:58:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:58:17,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343138429] [2023-12-19 22:58:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:58:17,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:58:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:58:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:58:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 22:58:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 22:58:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 22:58:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 22:58:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 22:58:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 22:58:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:58:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 22:58:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:58:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:58:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 22:58:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:58:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:17,785 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 22:58:17,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:58:17,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343138429] [2023-12-19 22:58:17,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343138429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:58:17,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 22:58:17,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 22:58:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823314866] [2023-12-19 22:58:17,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:58:17,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 22:58:17,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:58:17,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 22:58:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-19 22:58:17,787 INFO L87 Difference]: Start difference. First operand 196455 states and 334924 transitions. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:58:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:58:25,049 INFO L93 Difference]: Finished difference Result 197534 states and 343158 transitions. [2023-12-19 22:58:25,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 22:58:25,050 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2023-12-19 22:58:25,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:58:25,819 INFO L225 Difference]: With dead ends: 197534 [2023-12-19 22:58:25,820 INFO L226 Difference]: Without dead ends: 197100 [2023-12-19 22:58:25,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2023-12-19 22:58:25,892 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 2235 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 2913 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 3608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 2913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 22:58:25,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2250 Valid, 1102 Invalid, 3608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 2913 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 22:58:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197100 states. [2023-12-19 22:58:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197100 to 196591. [2023-12-19 22:58:33,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196591 states, 165887 states have (on average 1.6111027386112233) internal successors, (267261), 165893 states have internal predecessors, (267261), 30660 states have call successors, (30660), 38 states have call predecessors, (30660), 43 states have return successors, (37222), 30659 states have call predecessors, (37222), 30658 states have call successors, (37222) [2023-12-19 22:58:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196591 states to 196591 states and 335143 transitions. [2023-12-19 22:58:33,944 INFO L78 Accepts]: Start accepts. Automaton has 196591 states and 335143 transitions. Word has length 135 [2023-12-19 22:58:33,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:58:33,944 INFO L495 AbstractCegarLoop]: Abstraction has 196591 states and 335143 transitions. [2023-12-19 22:58:33,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-19 22:58:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 196591 states and 335143 transitions. [2023-12-19 22:58:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-19 22:58:34,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:58:34,365 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:58:34,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 22:58:34,366 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:58:34,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:58:34,366 INFO L85 PathProgramCache]: Analyzing trace with hash -164717715, now seen corresponding path program 1 times [2023-12-19 22:58:34,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:58:34,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975229656] [2023-12-19 22:58:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:58:34,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:58:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:58:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:58:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 22:58:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-19 22:58:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-19 22:58:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 22:58:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 22:58:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 22:58:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 22:58:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 22:58:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 22:58:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 22:58:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 22:58:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 22:58:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 22:58:34,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:58:34,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975229656] [2023-12-19 22:58:34,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975229656] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:58:34,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867164513] [2023-12-19 22:58:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:58:34,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:58:34,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:58:34,489 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:58:34,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 22:58:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:34,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 22:58:34,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:58:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-19 22:58:34,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:58:34,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867164513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:58:34,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:58:34,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-19 22:58:34,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819333821] [2023-12-19 22:58:34,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:58:34,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 22:58:34,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:58:34,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 22:58:34,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 22:58:34,781 INFO L87 Difference]: Start difference. First operand 196591 states and 335143 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:58:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:58:39,781 INFO L93 Difference]: Finished difference Result 294896 states and 504907 transitions. [2023-12-19 22:58:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 22:58:39,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2023-12-19 22:58:39,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:58:40,659 INFO L225 Difference]: With dead ends: 294896 [2023-12-19 22:58:40,659 INFO L226 Difference]: Without dead ends: 196599 [2023-12-19 22:58:40,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-19 22:58:40,846 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 6 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 22:58:40,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1657 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 22:58:40,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196599 states. [2023-12-19 22:58:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196599 to 196593. [2023-12-19 22:58:47,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196593 states, 165888 states have (on average 1.6110990547839505) internal successors, (267262), 165895 states have internal predecessors, (267262), 30660 states have call successors, (30660), 38 states have call predecessors, (30660), 44 states have return successors, (37224), 30659 states have call predecessors, (37224), 30658 states have call successors, (37224) [2023-12-19 22:58:48,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196593 states to 196593 states and 335146 transitions. [2023-12-19 22:58:48,710 INFO L78 Accepts]: Start accepts. Automaton has 196593 states and 335146 transitions. Word has length 135 [2023-12-19 22:58:48,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 22:58:48,711 INFO L495 AbstractCegarLoop]: Abstraction has 196593 states and 335146 transitions. [2023-12-19 22:58:48,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-19 22:58:48,711 INFO L276 IsEmpty]: Start isEmpty. Operand 196593 states and 335146 transitions. [2023-12-19 22:58:48,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-19 22:58:48,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 22:58:48,829 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 22:58:48,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 22:58:49,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-19 22:58:49,033 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 22:58:49,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 22:58:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash 848291097, now seen corresponding path program 1 times [2023-12-19 22:58:49,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 22:58:49,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525172897] [2023-12-19 22:58:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:58:49,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 22:58:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 22:58:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 22:58:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-19 22:58:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 22:58:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-19 22:58:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-19 22:58:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 22:58:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 22:58:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 22:58:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 22:58:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 22:58:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 22:58:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 22:58:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 22:58:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-19 22:58:49,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 22:58:49,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525172897] [2023-12-19 22:58:49,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525172897] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 22:58:49,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728176094] [2023-12-19 22:58:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 22:58:49,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 22:58:49,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 22:58:49,206 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 22:58:49,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 22:58:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 22:58:49,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 22:58:49,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 22:58:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 22:58:49,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 22:58:49,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728176094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 22:58:49,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 22:58:49,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2023-12-19 22:58:49,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775775682] [2023-12-19 22:58:49,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 22:58:49,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 22:58:49,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 22:58:49,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 22:58:49,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2023-12-19 22:58:49,633 INFO L87 Difference]: Start difference. First operand 196593 states and 335146 transitions. Second operand has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-19 22:58:55,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 22:58:55,074 INFO L93 Difference]: Finished difference Result 197673 states and 336802 transitions. [2023-12-19 22:58:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 22:58:55,075 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) Word has length 136 [2023-12-19 22:58:55,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 22:58:55,984 INFO L225 Difference]: With dead ends: 197673 [2023-12-19 22:58:55,984 INFO L226 Difference]: Without dead ends: 197367 [2023-12-19 22:58:56,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 22:58:56,077 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 986 mSDsluCounter, 3805 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 4238 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 22:58:56,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 4238 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 22:58:56,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197367 states.