/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_spec27_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 23:12:29,049 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 23:12:29,117 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 23:12:29,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 23:12:29,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 23:12:29,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 23:12:29,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 23:12:29,151 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 23:12:29,151 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 23:12:29,154 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 23:12:29,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 23:12:29,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 23:12:29,155 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 23:12:29,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 23:12:29,156 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 23:12:29,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 23:12:29,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 23:12:29,157 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 23:12:29,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 23:12:29,158 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 23:12:29,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 23:12:29,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 23:12:29,159 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 23:12:29,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 23:12:29,159 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 23:12:29,159 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 23:12:29,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 23:12:29,160 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 23:12:29,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 23:12:29,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 23:12:29,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 23:12:29,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 23:12:29,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:12:29,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 23:12:29,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 23:12:29,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 23:12:29,162 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 23:12:29,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 23:12:29,162 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 23:12:29,162 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 23:12:29,162 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 23:12:29,162 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 23:12:29,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 23:12:29,163 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 23:12:29,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 23:12:29,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 23:12:29,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 23:12:29,392 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 23:12:29,392 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 23:12:29,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2023-12-19 23:12:30,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 23:12:30,659 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 23:12:30,659 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2023-12-19 23:12:30,683 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f1db5910/6dd581eb57814389a188de77b444718b/FLAGf69b5e71a [2023-12-19 23:12:30,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f1db5910/6dd581eb57814389a188de77b444718b [2023-12-19 23:12:30,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 23:12:30,696 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 23:12:30,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 23:12:30,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 23:12:30,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 23:12:30,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:12:30" (1/1) ... [2023-12-19 23:12:30,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1309e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:30, skipping insertion in model container [2023-12-19 23:12:30,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 11:12:30" (1/1) ... [2023-12-19 23:12:30,743 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 23:12:31,118 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_spec27_product28.cil.c[32786,32799] [2023-12-19 23:12:31,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:12:31,185 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 23:12:31,195 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [48] [2023-12-19 23:12:31,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [95] [2023-12-19 23:12:31,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [386] [2023-12-19 23:12:31,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [532] [2023-12-19 23:12:31,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [898] [2023-12-19 23:12:31,196 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1300] [2023-12-19 23:12:31,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1622] [2023-12-19 23:12:31,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1631] [2023-12-19 23:12:31,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1648] [2023-12-19 23:12:31,197 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1683] [2023-12-19 23:12:31,198 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2752] [2023-12-19 23:12:31,253 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_spec27_product28.cil.c[32786,32799] [2023-12-19 23:12:31,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 23:12:31,289 INFO L206 MainTranslator]: Completed translation [2023-12-19 23:12:31,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31 WrapperNode [2023-12-19 23:12:31,289 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 23:12:31,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 23:12:31,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 23:12:31,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 23:12:31,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,366 INFO L138 Inliner]: procedures = 128, calls = 197, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 856 [2023-12-19 23:12:31,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 23:12:31,367 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 23:12:31,367 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 23:12:31,367 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 23:12:31,375 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,379 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,404 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-12-19 23:12:31,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,415 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,420 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,424 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,426 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 23:12:31,432 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 23:12:31,432 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 23:12:31,432 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 23:12:31,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (1/1) ... [2023-12-19 23:12:31,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 23:12:31,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:12:31,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 23:12:31,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 23:12:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-12-19 23:12:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-12-19 23:12:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-19 23:12:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-19 23:12:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-19 23:12:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-19 23:12:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-19 23:12:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-19 23:12:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-19 23:12:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-19 23:12:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-19 23:12:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-19 23:12:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-19 23:12:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-19 23:12:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-19 23:12:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-19 23:12:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-19 23:12:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-19 23:12:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-19 23:12:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-19 23:12:31,508 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-19 23:12:31,508 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-19 23:12:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-19 23:12:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-19 23:12:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 23:12:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-19 23:12:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-19 23:12:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-19 23:12:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-19 23:12:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-19 23:12:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-19 23:12:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-19 23:12:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-19 23:12:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-19 23:12:31,509 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-19 23:12:31,509 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2023-12-19 23:12:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2023-12-19 23:12:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-19 23:12:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-19 23:12:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-19 23:12:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-19 23:12:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-19 23:12:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-19 23:12:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-19 23:12:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-19 23:12:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 23:12:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 23:12:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-19 23:12:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-19 23:12:31,510 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-19 23:12:31,510 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-19 23:12:31,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 23:12:31,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 23:12:31,666 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 23:12:31,668 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 23:12:32,150 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 23:12:32,192 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 23:12:32,192 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 23:12:32,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:12:32 BoogieIcfgContainer [2023-12-19 23:12:32,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 23:12:32,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 23:12:32,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 23:12:32,197 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 23:12:32,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 11:12:30" (1/3) ... [2023-12-19 23:12:32,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5906f79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:12:32, skipping insertion in model container [2023-12-19 23:12:32,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 11:12:31" (2/3) ... [2023-12-19 23:12:32,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5906f79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 11:12:32, skipping insertion in model container [2023-12-19 23:12:32,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 11:12:32" (3/3) ... [2023-12-19 23:12:32,199 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2023-12-19 23:12:32,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 23:12:32,210 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 23:12:32,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 23:12:32,267 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;@5e8b8ca7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 23:12:32,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 23:12:32,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 310 states, 234 states have (on average 1.5726495726495726) internal successors, (368), 238 states have internal predecessors, (368), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-19 23:12:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-19 23:12:32,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:32,291 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:32,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:32,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash 182203916, now seen corresponding path program 1 times [2023-12-19 23:12:32,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:32,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103184203] [2023-12-19 23:12:32,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:32,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:12:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:12:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:12:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 23:12:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 23:12:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:12:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:12:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:12:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:12:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:12:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 23:12:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 23:12:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 23:12:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 23:12:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 23:12:32,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:32,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103184203] [2023-12-19 23:12:32,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103184203] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:12:32,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091698314] [2023-12-19 23:12:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:32,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:12:32,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:12:32,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:12:32,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 23:12:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 23:12:33,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:12:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-19 23:12:33,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:12:33,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091698314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:33,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:12:33,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2023-12-19 23:12:33,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48806302] [2023-12-19 23:12:33,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:33,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 23:12:33,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:33,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 23:12:33,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:12:33,240 INFO L87 Difference]: Start difference. First operand has 310 states, 234 states have (on average 1.5726495726495726) internal successors, (368), 238 states have internal predecessors, (368), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:33,316 INFO L93 Difference]: Finished difference Result 479 states and 710 transitions. [2023-12-19 23:12:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 23:12:33,318 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2023-12-19 23:12:33,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:33,326 INFO L225 Difference]: With dead ends: 479 [2023-12-19 23:12:33,326 INFO L226 Difference]: Without dead ends: 307 [2023-12-19 23:12:33,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:12:33,331 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:33,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 456 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:12:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-19 23:12:33,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-12-19 23:12:33,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 232 states have (on average 1.5560344827586208) internal successors, (361), 235 states have internal predecessors, (361), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-19 23:12:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 462 transitions. [2023-12-19 23:12:33,377 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 462 transitions. Word has length 133 [2023-12-19 23:12:33,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:33,378 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 462 transitions. [2023-12-19 23:12:33,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:33,378 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 462 transitions. [2023-12-19 23:12:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 23:12:33,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:33,383 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:33,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 23:12:33,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 23:12:33,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:33,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash 44385971, now seen corresponding path program 1 times [2023-12-19 23:12:33,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:33,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257610332] [2023-12-19 23:12:33,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:33,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:12:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:12:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:12:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 23:12:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 23:12:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:12:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:12:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:12:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:12:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:12:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:12:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:12:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 23:12:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 23:12:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-19 23:12:33,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257610332] [2023-12-19 23:12:33,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257610332] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:12:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654834971] [2023-12-19 23:12:33,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:33,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:12:33,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:12:33,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:12:33,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 23:12:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 23:12:34,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:12:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-19 23:12:34,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:12:34,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654834971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:34,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:12:34,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-19 23:12:34,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765229041] [2023-12-19 23:12:34,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:34,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:12:34,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:12:34,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:12:34,112 INFO L87 Difference]: Start difference. First operand 307 states and 462 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:34,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:34,158 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2023-12-19 23:12:34,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:12:34,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 134 [2023-12-19 23:12:34,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:34,161 INFO L225 Difference]: With dead ends: 475 [2023-12-19 23:12:34,161 INFO L226 Difference]: Without dead ends: 309 [2023-12-19 23:12:34,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:12:34,163 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 0 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:34,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 905 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:12:34,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-12-19 23:12:34,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2023-12-19 23:12:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 234 states have (on average 1.5512820512820513) internal successors, (363), 237 states have internal predecessors, (363), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-19 23:12:34,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 464 transitions. [2023-12-19 23:12:34,193 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 464 transitions. Word has length 134 [2023-12-19 23:12:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:34,193 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 464 transitions. [2023-12-19 23:12:34,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:34,194 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 464 transitions. [2023-12-19 23:12:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-19 23:12:34,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:34,196 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:34,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 23:12:34,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 23:12:34,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:34,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1383789359, now seen corresponding path program 1 times [2023-12-19 23:12:34,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:34,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906254092] [2023-12-19 23:12:34,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:34,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:12:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:12:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:12:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-19 23:12:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 23:12:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:12:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:12:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:12:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:12:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:12:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 23:12:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 23:12:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 23:12:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 23:12:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-19 23:12:34,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:34,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906254092] [2023-12-19 23:12:34,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906254092] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:12:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996348030] [2023-12-19 23:12:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:34,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:12:34,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:12:34,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:12:34,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 23:12:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:34,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 23:12:34,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:12:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-19 23:12:34,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:12:34,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996348030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:34,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:12:34,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-19 23:12:34,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265081909] [2023-12-19 23:12:34,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:34,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 23:12:34,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:34,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 23:12:34,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:12:34,954 INFO L87 Difference]: Start difference. First operand 309 states and 464 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:35,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:35,011 INFO L93 Difference]: Finished difference Result 644 states and 980 transitions. [2023-12-19 23:12:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 23:12:35,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2023-12-19 23:12:35,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:35,019 INFO L225 Difference]: With dead ends: 644 [2023-12-19 23:12:35,020 INFO L226 Difference]: Without dead ends: 357 [2023-12-19 23:12:35,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 23:12:35,027 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 95 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:35,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 869 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:12:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-12-19 23:12:35,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 352. [2023-12-19 23:12:35,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 266 states have (on average 1.5639097744360901) internal successors, (416), 269 states have internal predecessors, (416), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-12-19 23:12:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 539 transitions. [2023-12-19 23:12:35,052 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 539 transitions. Word has length 139 [2023-12-19 23:12:35,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:35,053 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 539 transitions. [2023-12-19 23:12:35,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 539 transitions. [2023-12-19 23:12:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-19 23:12:35,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:35,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:35,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 23:12:35,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:12:35,264 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:35,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1593849234, now seen corresponding path program 1 times [2023-12-19 23:12:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:35,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669554661] [2023-12-19 23:12:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:35,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 23:12:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-19 23:12:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-19 23:12:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 23:12:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 23:12:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:12:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:12:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:12:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:12:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 23:12:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 23:12:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 23:12:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 23:12:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 23:12:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-19 23:12:35,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669554661] [2023-12-19 23:12:35,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669554661] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:12:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081621649] [2023-12-19 23:12:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:35,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:12:35,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:12:35,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:12:35,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 23:12:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:35,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 23:12:35,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:12:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 23:12:35,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:12:35,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081621649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:35,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:12:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-19 23:12:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419171467] [2023-12-19 23:12:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:35,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:12:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:12:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:12:35,751 INFO L87 Difference]: Start difference. First operand 352 states and 539 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 23:12:35,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:35,811 INFO L93 Difference]: Finished difference Result 699 states and 1072 transitions. [2023-12-19 23:12:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:12:35,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 140 [2023-12-19 23:12:35,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:35,813 INFO L225 Difference]: With dead ends: 699 [2023-12-19 23:12:35,813 INFO L226 Difference]: Without dead ends: 354 [2023-12-19 23:12:35,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-19 23:12:35,815 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 8 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:35,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1765 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:12:35,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-19 23:12:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2023-12-19 23:12:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 267 states have (on average 1.5617977528089888) internal successors, (417), 271 states have internal predecessors, (417), 62 states have call successors, (62), 23 states have call predecessors, (62), 24 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2023-12-19 23:12:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 542 transitions. [2023-12-19 23:12:35,828 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 542 transitions. Word has length 140 [2023-12-19 23:12:35,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:35,828 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 542 transitions. [2023-12-19 23:12:35,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 23:12:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 542 transitions. [2023-12-19 23:12:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 23:12:35,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:35,830 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:35,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 23:12:36,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:12:36,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:36,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:36,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1600340539, now seen corresponding path program 1 times [2023-12-19 23:12:36,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:36,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981245264] [2023-12-19 23:12:36,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:36,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-19 23:12:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-19 23:12:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-19 23:12:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-19 23:12:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:12:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:12:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 23:12:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:12:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 23:12:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:12:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 23:12:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 23:12:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-19 23:12:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 23:12:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981245264] [2023-12-19 23:12:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981245264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:12:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929441613] [2023-12-19 23:12:36,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:36,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:12:36,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:12:36,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:12:36,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 23:12:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 23:12:36,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:12:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 23:12:36,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 23:12:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929441613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:36,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 23:12:36,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-19 23:12:36,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151172267] [2023-12-19 23:12:36,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:36,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 23:12:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:36,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 23:12:36,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:12:36,490 INFO L87 Difference]: Start difference. First operand 354 states and 542 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 23:12:36,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:36,551 INFO L93 Difference]: Finished difference Result 701 states and 1077 transitions. [2023-12-19 23:12:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 23:12:36,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 141 [2023-12-19 23:12:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:36,570 INFO L225 Difference]: With dead ends: 701 [2023-12-19 23:12:36,570 INFO L226 Difference]: Without dead ends: 356 [2023-12-19 23:12:36,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-19 23:12:36,572 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 8 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:36,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1751 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 23:12:36,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-12-19 23:12:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2023-12-19 23:12:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 268 states have (on average 1.5597014925373134) internal successors, (418), 273 states have internal predecessors, (418), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2023-12-19 23:12:36,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 548 transitions. [2023-12-19 23:12:36,594 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 548 transitions. Word has length 141 [2023-12-19 23:12:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:36,594 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 548 transitions. [2023-12-19 23:12:36,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 23:12:36,595 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 548 transitions. [2023-12-19 23:12:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 23:12:36,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:36,596 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:36,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 23:12:36,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:12:36,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:36,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:36,798 INFO L85 PathProgramCache]: Analyzing trace with hash -714528200, now seen corresponding path program 1 times [2023-12-19 23:12:36,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:36,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882197563] [2023-12-19 23:12:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:36,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 23:12:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-19 23:12:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:12:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:12:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:12:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:12:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:12:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:12:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:12:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 23:12:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 23:12:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 23:12:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-19 23:12:36,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:36,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882197563] [2023-12-19 23:12:36,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882197563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:36,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:36,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 23:12:36,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762246423] [2023-12-19 23:12:36,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:36,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 23:12:36,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:36,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 23:12:36,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:12:36,941 INFO L87 Difference]: Start difference. First operand 356 states and 548 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 23:12:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:38,015 INFO L93 Difference]: Finished difference Result 757 states and 1173 transitions. [2023-12-19 23:12:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:12:38,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 142 [2023-12-19 23:12:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:38,017 INFO L225 Difference]: With dead ends: 757 [2023-12-19 23:12:38,017 INFO L226 Difference]: Without dead ends: 420 [2023-12-19 23:12:38,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:12:38,019 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 794 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:38,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 812 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 23:12:38,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-12-19 23:12:38,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 356. [2023-12-19 23:12:38,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 268 states have (on average 1.5597014925373134) internal successors, (418), 273 states have internal predecessors, (418), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2023-12-19 23:12:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 547 transitions. [2023-12-19 23:12:38,052 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 547 transitions. Word has length 142 [2023-12-19 23:12:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:38,053 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 547 transitions. [2023-12-19 23:12:38,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 23:12:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 547 transitions. [2023-12-19 23:12:38,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-19 23:12:38,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:38,055 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:38,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 23:12:38,056 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:38,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:38,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1759814339, now seen corresponding path program 2 times [2023-12-19 23:12:38,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:38,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837644335] [2023-12-19 23:12:38,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:38,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 23:12:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-19 23:12:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 23:12:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:12:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:12:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:12:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:12:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:12:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:12:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 23:12:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 23:12:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 23:12:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-19 23:12:38,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:38,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837644335] [2023-12-19 23:12:38,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837644335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:38,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:38,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 23:12:38,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21473416] [2023-12-19 23:12:38,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:38,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 23:12:38,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:38,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 23:12:38,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:12:38,227 INFO L87 Difference]: Start difference. First operand 356 states and 547 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 23:12:39,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:39,087 INFO L93 Difference]: Finished difference Result 759 states and 1176 transitions. [2023-12-19 23:12:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 23:12:39,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 143 [2023-12-19 23:12:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:39,090 INFO L225 Difference]: With dead ends: 759 [2023-12-19 23:12:39,090 INFO L226 Difference]: Without dead ends: 422 [2023-12-19 23:12:39,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:12:39,092 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 812 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:39,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 812 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:12:39,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-19 23:12:39,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 358. [2023-12-19 23:12:39,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 269 states have (on average 1.5576208178438662) internal successors, (419), 275 states have internal predecessors, (419), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (69), 61 states have call predecessors, (69), 61 states have call successors, (69) [2023-12-19 23:12:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 550 transitions. [2023-12-19 23:12:39,110 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 550 transitions. Word has length 143 [2023-12-19 23:12:39,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:39,110 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 550 transitions. [2023-12-19 23:12:39,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 23:12:39,110 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 550 transitions. [2023-12-19 23:12:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 23:12:39,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:39,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:39,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 23:12:39,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:39,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:39,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1490198351, now seen corresponding path program 1 times [2023-12-19 23:12:39,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:39,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770795600] [2023-12-19 23:12:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:39,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 23:12:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:12:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:12:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:12:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:12:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:12:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:12:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 23:12:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 23:12:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 23:12:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-19 23:12:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-19 23:12:39,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770795600] [2023-12-19 23:12:39,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770795600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:39,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:39,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 23:12:39,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849846598] [2023-12-19 23:12:39,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:39,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 23:12:39,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 23:12:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 23:12:39,277 INFO L87 Difference]: Start difference. First operand 358 states and 550 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 23:12:40,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:40,341 INFO L93 Difference]: Finished difference Result 759 states and 1175 transitions. [2023-12-19 23:12:40,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 23:12:40,342 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 144 [2023-12-19 23:12:40,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:40,344 INFO L225 Difference]: With dead ends: 759 [2023-12-19 23:12:40,344 INFO L226 Difference]: Without dead ends: 422 [2023-12-19 23:12:40,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-19 23:12:40,346 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 810 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:40,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 812 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1738 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 23:12:40,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-19 23:12:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 358. [2023-12-19 23:12:40,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 269 states have (on average 1.5576208178438662) internal successors, (419), 275 states have internal predecessors, (419), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (69), 61 states have call predecessors, (69), 61 states have call successors, (69) [2023-12-19 23:12:40,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 550 transitions. [2023-12-19 23:12:40,382 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 550 transitions. Word has length 144 [2023-12-19 23:12:40,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:40,383 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 550 transitions. [2023-12-19 23:12:40,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-19 23:12:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 550 transitions. [2023-12-19 23:12:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 23:12:40,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:40,385 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:40,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 23:12:40,385 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:40,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:40,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1961554701, now seen corresponding path program 1 times [2023-12-19 23:12:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:40,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609414577] [2023-12-19 23:12:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-19 23:12:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:12:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:12:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:12:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:12:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:12:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:12:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 23:12:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 23:12:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 23:12:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-19 23:12:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 23:12:40,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:40,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609414577] [2023-12-19 23:12:40,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609414577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:40,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:40,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 23:12:40,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361540662] [2023-12-19 23:12:40,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:40,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 23:12:40,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:40,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 23:12:40,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:12:40,555 INFO L87 Difference]: Start difference. First operand 358 states and 550 transitions. Second operand has 11 states, 10 states have (on average 8.8) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-19 23:12:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:42,127 INFO L93 Difference]: Finished difference Result 757 states and 1170 transitions. [2023-12-19 23:12:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 23:12:42,128 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.8) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 144 [2023-12-19 23:12:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:42,130 INFO L225 Difference]: With dead ends: 757 [2023-12-19 23:12:42,130 INFO L226 Difference]: Without dead ends: 422 [2023-12-19 23:12:42,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-19 23:12:42,133 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 811 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2976 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 2976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:42,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1163 Invalid, 3263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 2976 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 23:12:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-12-19 23:12:42,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 358. [2023-12-19 23:12:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 269 states have (on average 1.5576208178438662) internal successors, (419), 275 states have internal predecessors, (419), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2023-12-19 23:12:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 549 transitions. [2023-12-19 23:12:42,153 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 549 transitions. Word has length 144 [2023-12-19 23:12:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:42,153 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 549 transitions. [2023-12-19 23:12:42,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.8) internal successors, (88), 8 states have internal predecessors, (88), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-19 23:12:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 549 transitions. [2023-12-19 23:12:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 23:12:42,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:42,155 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:42,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 23:12:42,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:42,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:42,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1055950414, now seen corresponding path program 2 times [2023-12-19 23:12:42,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:42,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578215733] [2023-12-19 23:12:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-19 23:12:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:12:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:12:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:12:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:12:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:12:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 23:12:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 23:12:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 23:12:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 23:12:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 23:12:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 23:12:42,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:42,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578215733] [2023-12-19 23:12:42,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578215733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:42,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:42,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 23:12:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430518072] [2023-12-19 23:12:42,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:42,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 23:12:42,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 23:12:42,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-19 23:12:42,359 INFO L87 Difference]: Start difference. First operand 358 states and 549 transitions. Second operand has 11 states, 10 states have (on average 8.9) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-19 23:12:43,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:43,736 INFO L93 Difference]: Finished difference Result 759 states and 1176 transitions. [2023-12-19 23:12:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 23:12:43,736 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.9) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 145 [2023-12-19 23:12:43,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:43,738 INFO L225 Difference]: With dead ends: 759 [2023-12-19 23:12:43,738 INFO L226 Difference]: Without dead ends: 424 [2023-12-19 23:12:43,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-19 23:12:43,740 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 809 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:43,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1163 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 23:12:43,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-12-19 23:12:43,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 360. [2023-12-19 23:12:43,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 270 states have (on average 1.5555555555555556) internal successors, (420), 277 states have internal predecessors, (420), 62 states have call successors, (62), 23 states have call predecessors, (62), 27 states have return successors, (73), 61 states have call predecessors, (73), 61 states have call successors, (73) [2023-12-19 23:12:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 555 transitions. [2023-12-19 23:12:43,759 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 555 transitions. Word has length 145 [2023-12-19 23:12:43,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:43,759 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 555 transitions. [2023-12-19 23:12:43,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.9) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-19 23:12:43,759 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 555 transitions. [2023-12-19 23:12:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-19 23:12:43,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:43,761 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:43,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 23:12:43,761 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:43,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1837258350, now seen corresponding path program 1 times [2023-12-19 23:12:43,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44023388] [2023-12-19 23:12:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:43,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-19 23:12:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 23:12:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:12:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:12:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:12:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 23:12:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:12:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 23:12:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 23:12:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 23:12:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-19 23:12:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:43,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:43,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44023388] [2023-12-19 23:12:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44023388] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:12:43,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889388270] [2023-12-19 23:12:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:43,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:12:43,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:12:43,904 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:12:43,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 23:12:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:44,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 23:12:44,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:12:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:44,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:12:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:44,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889388270] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:12:44,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:12:44,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-12-19 23:12:44,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673060020] [2023-12-19 23:12:44,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:12:44,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 23:12:44,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:44,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 23:12:44,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:12:44,239 INFO L87 Difference]: Start difference. First operand 360 states and 555 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 23:12:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:45,226 INFO L93 Difference]: Finished difference Result 900 states and 1461 transitions. [2023-12-19 23:12:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 23:12:45,231 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 146 [2023-12-19 23:12:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:45,236 INFO L225 Difference]: With dead ends: 900 [2023-12-19 23:12:45,236 INFO L226 Difference]: Without dead ends: 734 [2023-12-19 23:12:45,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-19 23:12:45,238 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1206 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:45,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 1010 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 23:12:45,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2023-12-19 23:12:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 655. [2023-12-19 23:12:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 501 states have (on average 1.6167664670658684) internal successors, (810), 508 states have internal predecessors, (810), 126 states have call successors, (126), 23 states have call predecessors, (126), 27 states have return successors, (147), 125 states have call predecessors, (147), 125 states have call successors, (147) [2023-12-19 23:12:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1083 transitions. [2023-12-19 23:12:45,262 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1083 transitions. Word has length 146 [2023-12-19 23:12:45,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:45,263 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 1083 transitions. [2023-12-19 23:12:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-12-19 23:12:45,263 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1083 transitions. [2023-12-19 23:12:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-19 23:12:45,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:45,266 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:45,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 23:12:45,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:12:45,476 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:45,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:45,477 INFO L85 PathProgramCache]: Analyzing trace with hash -217694479, now seen corresponding path program 1 times [2023-12-19 23:12:45,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:45,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654728220] [2023-12-19 23:12:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:45,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 23:12:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:12:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:12:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 23:12:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 23:12:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:12:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 23:12:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 23:12:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-19 23:12:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-19 23:12:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-19 23:12:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:45,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:45,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654728220] [2023-12-19 23:12:45,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654728220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:45,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:45,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:12:45,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354841100] [2023-12-19 23:12:45,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:45,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:12:45,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:12:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:12:45,565 INFO L87 Difference]: Start difference. First operand 655 states and 1083 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:46,388 INFO L93 Difference]: Finished difference Result 1611 states and 2730 transitions. [2023-12-19 23:12:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:12:46,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 152 [2023-12-19 23:12:46,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:46,393 INFO L225 Difference]: With dead ends: 1611 [2023-12-19 23:12:46,393 INFO L226 Difference]: Without dead ends: 1016 [2023-12-19 23:12:46,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:12:46,395 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 893 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:46,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 594 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:12:46,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-12-19 23:12:46,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 947. [2023-12-19 23:12:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 729 states have (on average 1.6282578875171467) internal successors, (1187), 736 states have internal predecessors, (1187), 190 states have call successors, (190), 23 states have call predecessors, (190), 27 states have return successors, (221), 189 states have call predecessors, (221), 189 states have call successors, (221) [2023-12-19 23:12:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1598 transitions. [2023-12-19 23:12:46,426 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1598 transitions. Word has length 152 [2023-12-19 23:12:46,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:46,426 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1598 transitions. [2023-12-19 23:12:46,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:46,426 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1598 transitions. [2023-12-19 23:12:46,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-19 23:12:46,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:46,430 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:46,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 23:12:46,430 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:46,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:46,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1469445229, now seen corresponding path program 1 times [2023-12-19 23:12:46,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:46,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142164512] [2023-12-19 23:12:46,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:46,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-19 23:12:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 23:12:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:12:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:12:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 23:12:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 23:12:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 23:12:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 23:12:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-19 23:12:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 23:12:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-19 23:12:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:46,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:46,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142164512] [2023-12-19 23:12:46,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142164512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:46,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:46,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:12:46,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733246809] [2023-12-19 23:12:46,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:46,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:12:46,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:46,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:12:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:12:46,515 INFO L87 Difference]: Start difference. First operand 947 states and 1598 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:47,354 INFO L93 Difference]: Finished difference Result 2308 states and 3957 transitions. [2023-12-19 23:12:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:12:47,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2023-12-19 23:12:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:47,360 INFO L225 Difference]: With dead ends: 2308 [2023-12-19 23:12:47,361 INFO L226 Difference]: Without dead ends: 1471 [2023-12-19 23:12:47,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:12:47,364 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 901 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:47,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 574 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:12:47,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2023-12-19 23:12:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1402. [2023-12-19 23:12:47,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1089 states have (on average 1.63544536271809) internal successors, (1781), 1096 states have internal predecessors, (1781), 285 states have call successors, (285), 23 states have call predecessors, (285), 27 states have return successors, (316), 284 states have call predecessors, (316), 284 states have call successors, (316) [2023-12-19 23:12:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 2382 transitions. [2023-12-19 23:12:47,442 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 2382 transitions. Word has length 153 [2023-12-19 23:12:47,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:47,443 INFO L495 AbstractCegarLoop]: Abstraction has 1402 states and 2382 transitions. [2023-12-19 23:12:47,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:47,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 2382 transitions. [2023-12-19 23:12:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-19 23:12:47,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:47,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:47,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 23:12:47,450 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:47,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:47,450 INFO L85 PathProgramCache]: Analyzing trace with hash 324922255, now seen corresponding path program 1 times [2023-12-19 23:12:47,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:47,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821047954] [2023-12-19 23:12:47,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:47,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-19 23:12:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 23:12:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:12:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:12:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-19 23:12:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 23:12:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 23:12:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 23:12:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-19 23:12:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-19 23:12:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-19 23:12:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:47,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:47,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821047954] [2023-12-19 23:12:47,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821047954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:47,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:47,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:12:47,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145843689] [2023-12-19 23:12:47,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:47,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:12:47,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:47,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:12:47,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:12:47,570 INFO L87 Difference]: Start difference. First operand 1402 states and 2382 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:48,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:48,385 INFO L93 Difference]: Finished difference Result 3326 states and 5769 transitions. [2023-12-19 23:12:48,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:12:48,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2023-12-19 23:12:48,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:48,395 INFO L225 Difference]: With dead ends: 3326 [2023-12-19 23:12:48,395 INFO L226 Difference]: Without dead ends: 2154 [2023-12-19 23:12:48,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:12:48,400 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 901 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:48,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 568 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:12:48,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2023-12-19 23:12:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2085. [2023-12-19 23:12:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2085 states, 1649 states have (on average 1.6416009702850212) internal successors, (2707), 1656 states have internal predecessors, (2707), 408 states have call successors, (408), 23 states have call predecessors, (408), 27 states have return successors, (455), 407 states have call predecessors, (455), 407 states have call successors, (455) [2023-12-19 23:12:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3570 transitions. [2023-12-19 23:12:48,473 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3570 transitions. Word has length 154 [2023-12-19 23:12:48,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:48,473 INFO L495 AbstractCegarLoop]: Abstraction has 2085 states and 3570 transitions. [2023-12-19 23:12:48,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:48,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3570 transitions. [2023-12-19 23:12:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-19 23:12:48,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:48,483 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:48,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 23:12:48,483 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:48,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:48,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1292556690, now seen corresponding path program 1 times [2023-12-19 23:12:48,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:48,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949914040] [2023-12-19 23:12:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:48,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-19 23:12:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-19 23:12:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:12:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:12:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 23:12:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:12:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 23:12:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-19 23:12:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-19 23:12:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-19 23:12:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-19 23:12:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:48,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949914040] [2023-12-19 23:12:48,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949914040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:48,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:48,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:12:48,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189211024] [2023-12-19 23:12:48,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:48,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:12:48,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:48,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:12:48,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:12:48,562 INFO L87 Difference]: Start difference. First operand 2085 states and 3570 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:49,418 INFO L93 Difference]: Finished difference Result 4896 states and 8574 transitions. [2023-12-19 23:12:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:12:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 155 [2023-12-19 23:12:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:49,437 INFO L225 Difference]: With dead ends: 4896 [2023-12-19 23:12:49,437 INFO L226 Difference]: Without dead ends: 3238 [2023-12-19 23:12:49,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:12:49,444 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 867 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:49,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 569 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:12:49,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2023-12-19 23:12:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3169. [2023-12-19 23:12:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 2554 states have (on average 1.6456538762725137) internal successors, (4203), 2561 states have internal predecessors, (4203), 587 states have call successors, (587), 23 states have call predecessors, (587), 27 states have return successors, (660), 586 states have call predecessors, (660), 586 states have call successors, (660) [2023-12-19 23:12:49,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5450 transitions. [2023-12-19 23:12:49,549 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5450 transitions. Word has length 155 [2023-12-19 23:12:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:49,550 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5450 transitions. [2023-12-19 23:12:49,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:49,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5450 transitions. [2023-12-19 23:12:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-19 23:12:49,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:49,563 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:49,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 23:12:49,564 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:49,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:49,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1745280851, now seen corresponding path program 1 times [2023-12-19 23:12:49,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:49,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633481520] [2023-12-19 23:12:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:49,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-19 23:12:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-19 23:12:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-19 23:12:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:12:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-19 23:12:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:12:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:12:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 23:12:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-19 23:12:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-19 23:12:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-19 23:12:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:49,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:49,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633481520] [2023-12-19 23:12:49,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633481520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:49,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:49,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:12:49,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386599517] [2023-12-19 23:12:49,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:49,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:12:49,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:12:49,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:12:49,639 INFO L87 Difference]: Start difference. First operand 3169 states and 5450 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:50,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:50,526 INFO L93 Difference]: Finished difference Result 7727 states and 13586 transitions. [2023-12-19 23:12:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:12:50,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2023-12-19 23:12:50,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:50,550 INFO L225 Difference]: With dead ends: 7727 [2023-12-19 23:12:50,550 INFO L226 Difference]: Without dead ends: 5208 [2023-12-19 23:12:50,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:12:50,557 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 897 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:50,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 612 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:12:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2023-12-19 23:12:50,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 5139. [2023-12-19 23:12:50,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 4148 states have (on average 1.6378977820636451) internal successors, (6794), 4155 states have internal predecessors, (6794), 963 states have call successors, (963), 23 states have call predecessors, (963), 27 states have return successors, (1080), 962 states have call predecessors, (1080), 962 states have call successors, (1080) [2023-12-19 23:12:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 8837 transitions. [2023-12-19 23:12:50,735 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 8837 transitions. Word has length 156 [2023-12-19 23:12:50,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:50,735 INFO L495 AbstractCegarLoop]: Abstraction has 5139 states and 8837 transitions. [2023-12-19 23:12:50,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:50,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 8837 transitions. [2023-12-19 23:12:50,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-19 23:12:50,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:50,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:50,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 23:12:50,756 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:50,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:50,757 INFO L85 PathProgramCache]: Analyzing trace with hash -413507122, now seen corresponding path program 1 times [2023-12-19 23:12:50,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:50,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749203670] [2023-12-19 23:12:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:50,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 23:12:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 23:12:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 23:12:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-19 23:12:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 23:12:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-19 23:12:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 23:12:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-19 23:12:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-19 23:12:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-19 23:12:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 23:12:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:50,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:50,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749203670] [2023-12-19 23:12:50,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749203670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:50,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:50,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:12:50,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050268848] [2023-12-19 23:12:50,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:50,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:12:50,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:50,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:12:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:12:50,846 INFO L87 Difference]: Start difference. First operand 5139 states and 8837 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:51,738 INFO L93 Difference]: Finished difference Result 12708 states and 22334 transitions. [2023-12-19 23:12:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:12:51,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2023-12-19 23:12:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:51,785 INFO L225 Difference]: With dead ends: 12708 [2023-12-19 23:12:51,785 INFO L226 Difference]: Without dead ends: 8585 [2023-12-19 23:12:51,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:12:51,799 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 857 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:51,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 571 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:12:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8585 states. [2023-12-19 23:12:52,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8585 to 8516. [2023-12-19 23:12:52,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8516 states, 6919 states have (on average 1.635640988582165) internal successors, (11317), 6926 states have internal predecessors, (11317), 1569 states have call successors, (1569), 23 states have call predecessors, (1569), 27 states have return successors, (1764), 1568 states have call predecessors, (1764), 1568 states have call successors, (1764) [2023-12-19 23:12:52,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8516 states to 8516 states and 14650 transitions. [2023-12-19 23:12:52,158 INFO L78 Accepts]: Start accepts. Automaton has 8516 states and 14650 transitions. Word has length 157 [2023-12-19 23:12:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:52,158 INFO L495 AbstractCegarLoop]: Abstraction has 8516 states and 14650 transitions. [2023-12-19 23:12:52,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:52,158 INFO L276 IsEmpty]: Start isEmpty. Operand 8516 states and 14650 transitions. [2023-12-19 23:12:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-19 23:12:52,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:52,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:52,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 23:12:52,192 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:52,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:52,192 INFO L85 PathProgramCache]: Analyzing trace with hash -897833455, now seen corresponding path program 1 times [2023-12-19 23:12:52,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:52,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335888434] [2023-12-19 23:12:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:52,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 23:12:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 23:12:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-19 23:12:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:12:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 23:12:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 23:12:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 23:12:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-19 23:12:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-19 23:12:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-19 23:12:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-19 23:12:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:52,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:52,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335888434] [2023-12-19 23:12:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335888434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:52,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:12:52,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233559777] [2023-12-19 23:12:52,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:52,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:12:52,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:12:52,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:12:52,274 INFO L87 Difference]: Start difference. First operand 8516 states and 14650 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:53,306 INFO L93 Difference]: Finished difference Result 22060 states and 38733 transitions. [2023-12-19 23:12:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:12:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2023-12-19 23:12:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:53,350 INFO L225 Difference]: With dead ends: 22060 [2023-12-19 23:12:53,350 INFO L226 Difference]: Without dead ends: 14969 [2023-12-19 23:12:53,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:12:53,370 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 875 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:53,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 584 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:12:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14969 states. [2023-12-19 23:12:53,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14969 to 14900. [2023-12-19 23:12:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14900 states, 12100 states have (on average 1.6259504132231406) internal successors, (19674), 12107 states have internal predecessors, (19674), 2772 states have call successors, (2772), 23 states have call predecessors, (2772), 27 states have return successors, (3111), 2771 states have call predecessors, (3111), 2771 states have call successors, (3111) [2023-12-19 23:12:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14900 states to 14900 states and 25557 transitions. [2023-12-19 23:12:53,847 INFO L78 Accepts]: Start accepts. Automaton has 14900 states and 25557 transitions. Word has length 158 [2023-12-19 23:12:53,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:53,847 INFO L495 AbstractCegarLoop]: Abstraction has 14900 states and 25557 transitions. [2023-12-19 23:12:53,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:53,848 INFO L276 IsEmpty]: Start isEmpty. Operand 14900 states and 25557 transitions. [2023-12-19 23:12:53,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-19 23:12:53,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:53,904 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:53,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 23:12:53,904 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:53,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:53,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1154953171, now seen corresponding path program 1 times [2023-12-19 23:12:53,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:53,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701920307] [2023-12-19 23:12:53,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:53,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 23:12:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 23:12:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-19 23:12:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 23:12:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 23:12:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 23:12:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 23:12:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 23:12:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-19 23:12:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-19 23:12:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-19 23:12:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:53,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:53,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701920307] [2023-12-19 23:12:53,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701920307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:53,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:53,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:12:53,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735971671] [2023-12-19 23:12:53,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:53,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:12:53,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:53,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:12:53,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:12:54,000 INFO L87 Difference]: Start difference. First operand 14900 states and 25557 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:55,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:55,307 INFO L93 Difference]: Finished difference Result 39419 states and 69119 transitions. [2023-12-19 23:12:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:12:55,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2023-12-19 23:12:55,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:55,399 INFO L225 Difference]: With dead ends: 39419 [2023-12-19 23:12:55,399 INFO L226 Difference]: Without dead ends: 26536 [2023-12-19 23:12:55,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:12:55,436 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 865 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:55,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 569 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:12:55,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26536 states. [2023-12-19 23:12:56,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26536 to 26467. [2023-12-19 23:12:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26467 states, 21628 states have (on average 1.6219252820417978) internal successors, (35079), 21635 states have internal predecessors, (35079), 4811 states have call successors, (4811), 23 states have call predecessors, (4811), 27 states have return successors, (5424), 4810 states have call predecessors, (5424), 4810 states have call successors, (5424) [2023-12-19 23:12:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26467 states to 26467 states and 45314 transitions. [2023-12-19 23:12:56,304 INFO L78 Accepts]: Start accepts. Automaton has 26467 states and 45314 transitions. Word has length 159 [2023-12-19 23:12:56,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:12:56,305 INFO L495 AbstractCegarLoop]: Abstraction has 26467 states and 45314 transitions. [2023-12-19 23:12:56,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:56,305 INFO L276 IsEmpty]: Start isEmpty. Operand 26467 states and 45314 transitions. [2023-12-19 23:12:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-19 23:12:56,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:12:56,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:12:56,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 23:12:56,360 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:12:56,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:12:56,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1190616977, now seen corresponding path program 1 times [2023-12-19 23:12:56,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:12:56,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856090009] [2023-12-19 23:12:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:12:56,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:12:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:12:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:12:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:12:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:12:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:12:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:12:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-19 23:12:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 23:12:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 23:12:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-19 23:12:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 23:12:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-19 23:12:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 23:12:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-19 23:12:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:12:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-19 23:12:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-19 23:12:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-19 23:12:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:12:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:12:56,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:12:56,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856090009] [2023-12-19 23:12:56,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856090009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:12:56,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:12:56,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:12:56,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342718204] [2023-12-19 23:12:56,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:12:56,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:12:56,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:12:56,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:12:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:12:56,446 INFO L87 Difference]: Start difference. First operand 26467 states and 45314 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:12:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:12:58,206 INFO L93 Difference]: Finished difference Result 72031 states and 125543 transitions. [2023-12-19 23:12:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:12:58,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2023-12-19 23:12:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:12:58,398 INFO L225 Difference]: With dead ends: 72031 [2023-12-19 23:12:58,399 INFO L226 Difference]: Without dead ends: 48296 [2023-12-19 23:12:58,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:12:58,470 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 871 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 23:12:58,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 579 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 23:12:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48296 states. [2023-12-19 23:12:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48296 to 48227. [2023-12-19 23:13:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48227 states, 39673 states have (on average 1.6164898041489173) internal successors, (64131), 39680 states have internal predecessors, (64131), 8526 states have call successors, (8526), 23 states have call predecessors, (8526), 27 states have return successors, (9671), 8525 states have call predecessors, (9671), 8525 states have call successors, (9671) [2023-12-19 23:13:00,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48227 states to 48227 states and 82328 transitions. [2023-12-19 23:13:00,178 INFO L78 Accepts]: Start accepts. Automaton has 48227 states and 82328 transitions. Word has length 160 [2023-12-19 23:13:00,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:13:00,179 INFO L495 AbstractCegarLoop]: Abstraction has 48227 states and 82328 transitions. [2023-12-19 23:13:00,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:13:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand 48227 states and 82328 transitions. [2023-12-19 23:13:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 23:13:00,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:13:00,268 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:13:00,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 23:13:00,269 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:13:00,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:13:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash -344398323, now seen corresponding path program 1 times [2023-12-19 23:13:00,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:13:00,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245107638] [2023-12-19 23:13:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:13:00,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:13:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:13:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:13:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:13:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:13:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:13:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:13:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 23:13:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-19 23:13:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-19 23:13:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-19 23:13:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-19 23:13:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-19 23:13:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 23:13:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-19 23:13:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:13:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-19 23:13:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-19 23:13:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-19 23:13:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:13:00,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:13:00,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245107638] [2023-12-19 23:13:00,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245107638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:13:00,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:13:00,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 23:13:00,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365859786] [2023-12-19 23:13:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:13:00,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 23:13:00,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:13:00,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 23:13:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 23:13:00,348 INFO L87 Difference]: Start difference. First operand 48227 states and 82328 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:13:02,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:13:02,786 INFO L93 Difference]: Finished difference Result 89750 states and 156907 transitions. [2023-12-19 23:13:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 23:13:02,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2023-12-19 23:13:02,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:13:03,123 INFO L225 Difference]: With dead ends: 89750 [2023-12-19 23:13:03,123 INFO L226 Difference]: Without dead ends: 89584 [2023-12-19 23:13:03,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 23:13:03,183 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 881 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 23:13:03,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 569 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 23:13:03,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89584 states. [2023-12-19 23:13:05,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89584 to 89515. [2023-12-19 23:13:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89515 states, 74162 states have (on average 1.6094630673390686) internal successors, (119361), 74169 states have internal predecessors, (119361), 15325 states have call successors, (15325), 23 states have call predecessors, (15325), 27 states have return successors, (17516), 15324 states have call predecessors, (17516), 15324 states have call successors, (17516) [2023-12-19 23:13:06,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89515 states to 89515 states and 152202 transitions. [2023-12-19 23:13:06,236 INFO L78 Accepts]: Start accepts. Automaton has 89515 states and 152202 transitions. Word has length 161 [2023-12-19 23:13:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:13:06,237 INFO L495 AbstractCegarLoop]: Abstraction has 89515 states and 152202 transitions. [2023-12-19 23:13:06,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-19 23:13:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 89515 states and 152202 transitions. [2023-12-19 23:13:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 23:13:06,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:13:06,371 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:13:06,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 23:13:06,371 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:13:06,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:13:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1096137072, now seen corresponding path program 1 times [2023-12-19 23:13:06,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:13:06,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861270990] [2023-12-19 23:13:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:13:06,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:13:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:13:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:13:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:13:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:13:06,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:13:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:13:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:13:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-19 23:13:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 23:13:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-19 23:13:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 23:13:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 23:13:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 23:13:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-19 23:13:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:13:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-19 23:13:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-19 23:13:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-19 23:13:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-19 23:13:06,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:13:06,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861270990] [2023-12-19 23:13:06,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861270990] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 23:13:06,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877257499] [2023-12-19 23:13:06,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:13:06,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:13:06,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 23:13:06,726 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 23:13:06,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 23:13:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:06,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 23:13:06,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 23:13:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-19 23:13:07,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 23:13:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-19 23:13:07,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877257499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 23:13:07,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 23:13:07,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 30 [2023-12-19 23:13:07,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935065846] [2023-12-19 23:13:07,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 23:13:07,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 23:13:07,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:13:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 23:13:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2023-12-19 23:13:07,696 INFO L87 Difference]: Start difference. First operand 89515 states and 152202 transitions. Second operand has 30 states, 29 states have (on average 8.482758620689655) internal successors, (246), 23 states have internal predecessors, (246), 9 states have call successors, (51), 11 states have call predecessors, (51), 11 states have return successors, (45), 11 states have call predecessors, (45), 9 states have call successors, (45) [2023-12-19 23:13:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 23:13:30,765 INFO L93 Difference]: Finished difference Result 535137 states and 959026 transitions. [2023-12-19 23:13:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-19 23:13:30,767 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 8.482758620689655) internal successors, (246), 23 states have internal predecessors, (246), 9 states have call successors, (51), 11 states have call predecessors, (51), 11 states have return successors, (45), 11 states have call predecessors, (45), 9 states have call successors, (45) Word has length 162 [2023-12-19 23:13:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 23:13:33,886 INFO L225 Difference]: With dead ends: 535137 [2023-12-19 23:13:33,886 INFO L226 Difference]: Without dead ends: 534976 [2023-12-19 23:13:34,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6456 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2630, Invalid=16830, Unknown=0, NotChecked=0, Total=19460 [2023-12-19 23:13:34,090 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 5875 mSDsluCounter, 7971 mSDsCounter, 0 mSdLazyCounter, 18657 mSolverCounterSat, 2149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5913 SdHoareTripleChecker+Valid, 8509 SdHoareTripleChecker+Invalid, 20806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2149 IncrementalHoareTripleChecker+Valid, 18657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-19 23:13:34,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5913 Valid, 8509 Invalid, 20806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2149 Valid, 18657 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-19 23:13:34,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534976 states. [2023-12-19 23:13:52,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534976 to 356629. [2023-12-19 23:13:53,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356629 states, 295594 states have (on average 1.6104048120056564) internal successors, (476026), 295402 states have internal predecessors, (476026), 60890 states have call successors, (60890), 126 states have call predecessors, (60890), 144 states have return successors, (84843), 61112 states have call predecessors, (84843), 60884 states have call successors, (84843) [2023-12-19 23:13:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356629 states to 356629 states and 621759 transitions. [2023-12-19 23:13:55,024 INFO L78 Accepts]: Start accepts. Automaton has 356629 states and 621759 transitions. Word has length 162 [2023-12-19 23:13:55,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 23:13:55,024 INFO L495 AbstractCegarLoop]: Abstraction has 356629 states and 621759 transitions. [2023-12-19 23:13:55,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 8.482758620689655) internal successors, (246), 23 states have internal predecessors, (246), 9 states have call successors, (51), 11 states have call predecessors, (51), 11 states have return successors, (45), 11 states have call predecessors, (45), 9 states have call successors, (45) [2023-12-19 23:13:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 356629 states and 621759 transitions. [2023-12-19 23:13:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-19 23:13:55,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 23:13:55,738 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 23:13:55,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 23:13:55,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 23:13:55,946 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 23:13:55,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 23:13:55,946 INFO L85 PathProgramCache]: Analyzing trace with hash 304840566, now seen corresponding path program 1 times [2023-12-19 23:13:55,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 23:13:55,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038173508] [2023-12-19 23:13:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 23:13:55,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 23:13:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 23:13:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 23:13:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-19 23:13:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-19 23:13:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 23:13:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 23:13:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 23:13:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-19 23:13:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-19 23:13:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 23:13:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-19 23:13:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-19 23:13:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-19 23:13:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 23:13:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 23:13:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-19 23:13:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-19 23:13:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-19 23:13:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 23:13:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-19 23:13:56,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 23:13:56,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038173508] [2023-12-19 23:13:56,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038173508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 23:13:56,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 23:13:56,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 23:13:56,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156568775] [2023-12-19 23:13:56,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 23:13:56,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 23:13:56,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 23:13:56,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 23:13:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 23:13:56,276 INFO L87 Difference]: Start difference. First operand 356629 states and 621759 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18)