/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 05:31:32,170 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 05:31:32,216 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 05:31:32,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 05:31:32,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 05:31:32,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 05:31:32,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 05:31:32,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 05:31:32,243 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 05:31:32,243 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 05:31:32,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 05:31:32,243 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 05:31:32,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 05:31:32,244 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 05:31:32,244 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 05:31:32,244 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 05:31:32,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 05:31:32,245 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 05:31:32,245 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 05:31:32,245 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 05:31:32,245 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 05:31:32,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 05:31:32,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 05:31:32,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 05:31:32,252 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 05:31:32,253 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 05:31:32,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 05:31:32,253 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 05:31:32,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 05:31:32,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 05:31:32,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 05:31:32,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 05:31:32,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:31:32,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 05:31:32,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 05:31:32,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 05:31:32,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 05:31:32,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 05:31:32,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 05:31:32,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 05:31:32,256 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 05:31:32,256 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 05:31:32,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 05:31:32,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 05:31:32,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 05:31:32,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 05:31:32,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 05:31:32,478 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 05:31:32,478 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 05:31:32,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c [2023-12-16 05:31:33,459 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 05:31:33,682 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 05:31:33,682 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c [2023-12-16 05:31:33,708 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acaaae4b7/d8ca366b7ece481ebab0b8eb97f5433f/FLAG5852e89b5 [2023-12-16 05:31:33,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acaaae4b7/d8ca366b7ece481ebab0b8eb97f5433f [2023-12-16 05:31:33,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 05:31:33,721 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 05:31:33,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 05:31:33,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 05:31:33,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 05:31:33,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:31:33" (1/1) ... [2023-12-16 05:31:33,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cea44bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:33, skipping insertion in model container [2023-12-16 05:31:33,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:31:33" (1/1) ... [2023-12-16 05:31:33,777 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 05:31:34,113 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_spec11_product15.cil.c[45629,45642] [2023-12-16 05:31:34,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:31:34,185 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 05:31:34,191 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2023-12-16 05:31:34,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [460] [2023-12-16 05:31:34,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [493] [2023-12-16 05:31:34,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [768] [2023-12-16 05:31:34,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1842] [2023-12-16 05:31:34,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1859] [2023-12-16 05:31:34,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2084] [2023-12-16 05:31:34,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2093] [2023-12-16 05:31:34,194 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2131] [2023-12-16 05:31:34,194 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2406] [2023-12-16 05:31:34,194 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2772] [2023-12-16 05:31:34,242 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_spec11_product15.cil.c[45629,45642] [2023-12-16 05:31:34,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 05:31:34,296 INFO L206 MainTranslator]: Completed translation [2023-12-16 05:31:34,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34 WrapperNode [2023-12-16 05:31:34,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 05:31:34,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 05:31:34,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 05:31:34,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 05:31:34,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,366 INFO L138 Inliner]: procedures = 125, calls = 181, calls flagged for inlining = 53, calls inlined = 46, statements flattened = 886 [2023-12-16 05:31:34,366 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 05:31:34,367 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 05:31:34,367 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 05:31:34,367 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 05:31:34,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,401 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]. [2023-12-16 05:31:34,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,430 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 05:31:34,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 05:31:34,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 05:31:34,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 05:31:34,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (1/1) ... [2023-12-16 05:31:34,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 05:31:34,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:31:34,513 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) [2023-12-16 05:31:34,537 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 [2023-12-16 05:31:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-16 05:31:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-16 05:31:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-16 05:31:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-16 05:31:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-16 05:31:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-16 05:31:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-16 05:31:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-16 05:31:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-16 05:31:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-16 05:31:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-16 05:31:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-16 05:31:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-16 05:31:34,546 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-16 05:31:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-16 05:31:34,546 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-16 05:31:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-16 05:31:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-16 05:31:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-16 05:31:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-16 05:31:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 05:31:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-16 05:31:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-16 05:31:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-16 05:31:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-16 05:31:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-16 05:31:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-16 05:31:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-16 05:31:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-16 05:31:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-16 05:31:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-16 05:31:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-16 05:31:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-16 05:31:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-16 05:31:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-16 05:31:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 05:31:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 05:31:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-16 05:31:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-16 05:31:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-16 05:31:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-16 05:31:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 05:31:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 05:31:34,733 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 05:31:34,739 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 05:31:35,314 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 05:31:35,375 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 05:31:35,375 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 05:31:35,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:31:35 BoogieIcfgContainer [2023-12-16 05:31:35,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 05:31:35,377 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 05:31:35,377 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 05:31:35,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 05:31:35,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:31:33" (1/3) ... [2023-12-16 05:31:35,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3edcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:31:35, skipping insertion in model container [2023-12-16 05:31:35,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:34" (2/3) ... [2023-12-16 05:31:35,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3edcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:31:35, skipping insertion in model container [2023-12-16 05:31:35,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:31:35" (3/3) ... [2023-12-16 05:31:35,382 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product15.cil.c [2023-12-16 05:31:35,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 05:31:35,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 05:31:35,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 05:31:35,447 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;@3595fd59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 05:31:35,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 05:31:35,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 265 states, 203 states have (on average 1.6059113300492611) internal successors, (326), 207 states have internal predecessors, (326), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 05:31:35,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-16 05:31:35,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:35,471 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:35,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:35,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:35,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1316399150, now seen corresponding path program 1 times [2023-12-16 05:31:35,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:35,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190407267] [2023-12-16 05:31:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:35,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 05:31:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 05:31:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 05:31:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 05:31:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-16 05:31:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-16 05:31:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:31:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 05:31:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:31:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:36,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 05:31:36,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:36,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190407267] [2023-12-16 05:31:36,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190407267] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:31:36,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198592510] [2023-12-16 05:31:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:36,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:31:36,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:31:36,016 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) [2023-12-16 05:31:36,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 05:31:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:36,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 05:31:36,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:31:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-16 05:31:36,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:31:36,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198592510] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:36,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 05:31:36,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-12-16 05:31:36,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592601591] [2023-12-16 05:31:36,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:36,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 05:31:36,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:36,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 05:31:36,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 05:31:36,382 INFO L87 Difference]: Start difference. First operand has 265 states, 203 states have (on average 1.6059113300492611) internal successors, (326), 207 states have internal predecessors, (326), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:36,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:36,451 INFO L93 Difference]: Finished difference Result 385 states and 583 transitions. [2023-12-16 05:31:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 05:31:36,453 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2023-12-16 05:31:36,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:36,461 INFO L225 Difference]: With dead ends: 385 [2023-12-16 05:31:36,461 INFO L226 Difference]: Without dead ends: 262 [2023-12-16 05:31:36,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 05:31:36,466 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:36,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 393 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:31:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-16 05:31:36,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-12-16 05:31:36,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 201 states have (on average 1.5870646766169154) internal successors, (319), 204 states have internal predecessors, (319), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 05:31:36,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 402 transitions. [2023-12-16 05:31:36,521 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 402 transitions. Word has length 101 [2023-12-16 05:31:36,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:36,523 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 402 transitions. [2023-12-16 05:31:36,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:36,524 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 402 transitions. [2023-12-16 05:31:36,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 05:31:36,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:36,527 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:36,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 05:31:36,740 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 [2023-12-16 05:31:36,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:36,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:36,741 INFO L85 PathProgramCache]: Analyzing trace with hash -700340966, now seen corresponding path program 1 times [2023-12-16 05:31:36,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:36,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758499891] [2023-12-16 05:31:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:36,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:36,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:36,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:36,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:36,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 05:31:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 05:31:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:36,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 05:31:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 05:31:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-16 05:31:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 05:31:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 05:31:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-16 05:31:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 05:31:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 05:31:37,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:37,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758499891] [2023-12-16 05:31:37,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758499891] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:31:37,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814858383] [2023-12-16 05:31:37,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:37,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:31:37,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:31:37,063 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) [2023-12-16 05:31:37,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 05:31:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 05:31:37,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:31:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-16 05:31:37,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:31:37,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814858383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:37,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 05:31:37,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-16 05:31:37,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083264925] [2023-12-16 05:31:37,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:37,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 05:31:37,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 05:31:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-16 05:31:37,339 INFO L87 Difference]: Start difference. First operand 262 states and 402 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:37,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:37,411 INFO L93 Difference]: Finished difference Result 381 states and 570 transitions. [2023-12-16 05:31:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 05:31:37,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2023-12-16 05:31:37,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:37,421 INFO L225 Difference]: With dead ends: 381 [2023-12-16 05:31:37,421 INFO L226 Difference]: Without dead ends: 264 [2023-12-16 05:31:37,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-16 05:31:37,424 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 0 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:37,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 779 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:31:37,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-12-16 05:31:37,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-12-16 05:31:37,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 203 states have (on average 1.5812807881773399) internal successors, (321), 206 states have internal predecessors, (321), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-16 05:31:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 404 transitions. [2023-12-16 05:31:37,445 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 404 transitions. Word has length 102 [2023-12-16 05:31:37,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:37,446 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 404 transitions. [2023-12-16 05:31:37,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:37,449 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 404 transitions. [2023-12-16 05:31:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 05:31:37,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:37,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:37,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 05:31:37,659 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 [2023-12-16 05:31:37,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:37,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1632736267, now seen corresponding path program 1 times [2023-12-16 05:31:37,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:37,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939605881] [2023-12-16 05:31:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:37,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 05:31:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 05:31:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 05:31:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-16 05:31:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-16 05:31:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-16 05:31:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-16 05:31:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-16 05:31:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 05:31:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-16 05:31:37,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:37,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939605881] [2023-12-16 05:31:37,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939605881] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:31:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123691364] [2023-12-16 05:31:37,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:37,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:31:37,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:31:37,886 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) [2023-12-16 05:31:37,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 05:31:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 05:31:38,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:31:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-16 05:31:38,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:31:38,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123691364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:38,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 05:31:38,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-16 05:31:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360513154] [2023-12-16 05:31:38,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:38,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 05:31:38,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:38,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 05:31:38,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-16 05:31:38,126 INFO L87 Difference]: Start difference. First operand 264 states and 404 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:38,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:38,171 INFO L93 Difference]: Finished difference Result 558 states and 867 transitions. [2023-12-16 05:31:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 05:31:38,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2023-12-16 05:31:38,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:38,175 INFO L225 Difference]: With dead ends: 558 [2023-12-16 05:31:38,175 INFO L226 Difference]: Without dead ends: 316 [2023-12-16 05:31:38,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-16 05:31:38,178 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 102 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:38,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 737 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:31:38,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-12-16 05:31:38,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 311. [2023-12-16 05:31:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 239 states have (on average 1.594142259414226) internal successors, (381), 242 states have internal predecessors, (381), 53 states have call successors, (53), 18 states have call predecessors, (53), 18 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-16 05:31:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 486 transitions. [2023-12-16 05:31:38,207 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 486 transitions. Word has length 109 [2023-12-16 05:31:38,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:38,207 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 486 transitions. [2023-12-16 05:31:38,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:38,208 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 486 transitions. [2023-12-16 05:31:38,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 05:31:38,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:38,212 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:38,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 05:31:38,418 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 [2023-12-16 05:31:38,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:38,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash 870933511, now seen corresponding path program 1 times [2023-12-16 05:31:38,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:38,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657078767] [2023-12-16 05:31:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:38,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 05:31:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-16 05:31:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-16 05:31:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-16 05:31:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 05:31:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-16 05:31:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 05:31:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-16 05:31:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-16 05:31:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-16 05:31:38,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:38,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657078767] [2023-12-16 05:31:38,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657078767] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:31:38,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654384062] [2023-12-16 05:31:38,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:38,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:31:38,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:31:38,590 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) [2023-12-16 05:31:38,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 05:31:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:38,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 05:31:38,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:31:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 05:31:38,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:31:38,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654384062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:38,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 05:31:38,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-16 05:31:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850760887] [2023-12-16 05:31:38,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:38,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 05:31:38,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 05:31:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-16 05:31:38,878 INFO L87 Difference]: Start difference. First operand 311 states and 486 transitions. Second operand has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 05:31:38,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:38,957 INFO L93 Difference]: Finished difference Result 617 states and 966 transitions. [2023-12-16 05:31:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 05:31:38,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2023-12-16 05:31:38,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:38,959 INFO L225 Difference]: With dead ends: 617 [2023-12-16 05:31:38,960 INFO L226 Difference]: Without dead ends: 313 [2023-12-16 05:31:38,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:31:38,963 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 8 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1513 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 [2023-12-16 05:31:38,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1513 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:31:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-16 05:31:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2023-12-16 05:31:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 240 states have (on average 1.5916666666666666) internal successors, (382), 244 states have internal predecessors, (382), 53 states have call successors, (53), 18 states have call predecessors, (53), 19 states have return successors, (54), 52 states have call predecessors, (54), 52 states have call successors, (54) [2023-12-16 05:31:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 489 transitions. [2023-12-16 05:31:38,977 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 489 transitions. Word has length 110 [2023-12-16 05:31:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:38,978 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 489 transitions. [2023-12-16 05:31:38,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 05:31:38,978 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 489 transitions. [2023-12-16 05:31:38,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 05:31:38,980 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:38,980 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:38,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 05:31:39,188 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 [2023-12-16 05:31:39,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:39,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:39,189 INFO L85 PathProgramCache]: Analyzing trace with hash 721896664, now seen corresponding path program 1 times [2023-12-16 05:31:39,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:39,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922510476] [2023-12-16 05:31:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:39,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-16 05:31:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-16 05:31:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-16 05:31:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 05:31:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-16 05:31:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 05:31:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 05:31:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-16 05:31:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 05:31:39,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:39,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922510476] [2023-12-16 05:31:39,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922510476] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:31:39,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677831618] [2023-12-16 05:31:39,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:39,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:31:39,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:31:39,402 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) [2023-12-16 05:31:39,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 05:31:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:39,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 05:31:39,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:31:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 05:31:39,685 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:31:39,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677831618] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:39,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 05:31:39,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-16 05:31:39,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210222815] [2023-12-16 05:31:39,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:39,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 05:31:39,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:39,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 05:31:39,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-12-16 05:31:39,687 INFO L87 Difference]: Start difference. First operand 313 states and 489 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 05:31:39,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:39,762 INFO L93 Difference]: Finished difference Result 619 states and 971 transitions. [2023-12-16 05:31:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 05:31:39,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 111 [2023-12-16 05:31:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:39,764 INFO L225 Difference]: With dead ends: 619 [2023-12-16 05:31:39,764 INFO L226 Difference]: Without dead ends: 315 [2023-12-16 05:31:39,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-12-16 05:31:39,766 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 8 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:39,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1499 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 05:31:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-12-16 05:31:39,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-12-16 05:31:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 241 states have (on average 1.5892116182572613) internal successors, (383), 246 states have internal predecessors, (383), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2023-12-16 05:31:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 495 transitions. [2023-12-16 05:31:39,777 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 495 transitions. Word has length 111 [2023-12-16 05:31:39,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:39,777 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 495 transitions. [2023-12-16 05:31:39,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 05:31:39,778 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 495 transitions. [2023-12-16 05:31:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-16 05:31:39,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:39,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:39,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 05:31:39,992 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 [2023-12-16 05:31:39,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:39,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1034592677, now seen corresponding path program 1 times [2023-12-16 05:31:39,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:39,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283924867] [2023-12-16 05:31:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:39,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 05:31:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-16 05:31:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-16 05:31:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-16 05:31:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 05:31:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-16 05:31:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 05:31:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-16 05:31:40,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:40,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283924867] [2023-12-16 05:31:40,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283924867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:40,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:40,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 05:31:40,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023579913] [2023-12-16 05:31:40,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:40,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 05:31:40,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:40,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 05:31:40,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 05:31:40,153 INFO L87 Difference]: Start difference. First operand 315 states and 495 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 05:31:41,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:41,213 INFO L93 Difference]: Finished difference Result 677 states and 1075 transitions. [2023-12-16 05:31:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 05:31:41,213 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2023-12-16 05:31:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:41,217 INFO L225 Difference]: With dead ends: 677 [2023-12-16 05:31:41,217 INFO L226 Difference]: Without dead ends: 381 [2023-12-16 05:31:41,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 05:31:41,219 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 824 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1704 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:41,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 963 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 05:31:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-16 05:31:41,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 315. [2023-12-16 05:31:41,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 241 states have (on average 1.5892116182572613) internal successors, (383), 246 states have internal predecessors, (383), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 52 states have call predecessors, (58), 52 states have call successors, (58) [2023-12-16 05:31:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 494 transitions. [2023-12-16 05:31:41,248 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 494 transitions. Word has length 112 [2023-12-16 05:31:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:41,248 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 494 transitions. [2023-12-16 05:31:41,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 05:31:41,249 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 494 transitions. [2023-12-16 05:31:41,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-16 05:31:41,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:41,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:41,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 05:31:41,251 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:41,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:41,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1222973646, now seen corresponding path program 2 times [2023-12-16 05:31:41,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:41,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812764249] [2023-12-16 05:31:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:41,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 05:31:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-16 05:31:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 05:31:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-16 05:31:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 05:31:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-16 05:31:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-16 05:31:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:41,408 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-16 05:31:41,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:41,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812764249] [2023-12-16 05:31:41,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812764249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:41,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:41,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 05:31:41,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035363170] [2023-12-16 05:31:41,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:41,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 05:31:41,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:41,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 05:31:41,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 05:31:41,409 INFO L87 Difference]: Start difference. First operand 315 states and 494 transitions. Second operand has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 05:31:42,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:42,488 INFO L93 Difference]: Finished difference Result 679 states and 1078 transitions. [2023-12-16 05:31:42,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 05:31:42,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2023-12-16 05:31:42,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:42,491 INFO L225 Difference]: With dead ends: 679 [2023-12-16 05:31:42,491 INFO L226 Difference]: Without dead ends: 383 [2023-12-16 05:31:42,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-16 05:31:42,492 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 824 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:42,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 963 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 05:31:42,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-16 05:31:42,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 317. [2023-12-16 05:31:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 242 states have (on average 1.5867768595041323) internal successors, (384), 248 states have internal predecessors, (384), 53 states have call successors, (53), 18 states have call predecessors, (53), 21 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2023-12-16 05:31:42,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 497 transitions. [2023-12-16 05:31:42,508 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 497 transitions. Word has length 113 [2023-12-16 05:31:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:42,509 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 497 transitions. [2023-12-16 05:31:42,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.875) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 05:31:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 497 transitions. [2023-12-16 05:31:42,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-16 05:31:42,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:42,510 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:42,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 05:31:42,511 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:42,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:42,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2109980502, now seen corresponding path program 1 times [2023-12-16 05:31:42,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:42,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402273663] [2023-12-16 05:31:42,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:42,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-16 05:31:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-16 05:31:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:31:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-16 05:31:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:31:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-16 05:31:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 05:31:42,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:42,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402273663] [2023-12-16 05:31:42,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402273663] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:42,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:42,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-16 05:31:42,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946085747] [2023-12-16 05:31:42,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:42,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 05:31:42,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:42,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 05:31:42,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-16 05:31:42,668 INFO L87 Difference]: Start difference. First operand 317 states and 497 transitions. Second operand has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-16 05:31:44,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:44,227 INFO L93 Difference]: Finished difference Result 677 states and 1073 transitions. [2023-12-16 05:31:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 05:31:44,228 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 114 [2023-12-16 05:31:44,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:44,230 INFO L225 Difference]: With dead ends: 677 [2023-12-16 05:31:44,230 INFO L226 Difference]: Without dead ends: 383 [2023-12-16 05:31:44,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-16 05:31:44,231 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 829 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:44,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1332 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 05:31:44,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-12-16 05:31:44,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 317. [2023-12-16 05:31:44,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 242 states have (on average 1.5867768595041323) internal successors, (384), 248 states have internal predecessors, (384), 53 states have call successors, (53), 18 states have call predecessors, (53), 21 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2023-12-16 05:31:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 496 transitions. [2023-12-16 05:31:44,246 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 496 transitions. Word has length 114 [2023-12-16 05:31:44,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:44,246 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 496 transitions. [2023-12-16 05:31:44,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.818181818181818) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-16 05:31:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 496 transitions. [2023-12-16 05:31:44,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-16 05:31:44,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:44,248 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:44,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 05:31:44,248 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:44,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:44,249 INFO L85 PathProgramCache]: Analyzing trace with hash 196050475, now seen corresponding path program 2 times [2023-12-16 05:31:44,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:44,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157791917] [2023-12-16 05:31:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:44,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-16 05:31:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 05:31:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 05:31:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-16 05:31:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 05:31:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-16 05:31:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 05:31:44,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:44,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157791917] [2023-12-16 05:31:44,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157791917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:44,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:44,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-16 05:31:44,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117232544] [2023-12-16 05:31:44,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:44,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 05:31:44,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:44,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 05:31:44,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-16 05:31:44,420 INFO L87 Difference]: Start difference. First operand 317 states and 496 transitions. Second operand has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-16 05:31:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:45,980 INFO L93 Difference]: Finished difference Result 679 states and 1079 transitions. [2023-12-16 05:31:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 05:31:45,980 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 115 [2023-12-16 05:31:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:45,982 INFO L225 Difference]: With dead ends: 679 [2023-12-16 05:31:45,983 INFO L226 Difference]: Without dead ends: 385 [2023-12-16 05:31:45,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-12-16 05:31:45,985 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 829 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:45,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1332 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2839 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 05:31:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-16 05:31:45,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 319. [2023-12-16 05:31:45,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 243 states have (on average 1.5843621399176955) internal successors, (385), 250 states have internal predecessors, (385), 53 states have call successors, (53), 18 states have call predecessors, (53), 22 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2023-12-16 05:31:45,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 502 transitions. [2023-12-16 05:31:45,998 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 502 transitions. Word has length 115 [2023-12-16 05:31:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:45,998 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 502 transitions. [2023-12-16 05:31:45,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-12-16 05:31:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 502 transitions. [2023-12-16 05:31:46,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-16 05:31:46,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:46,000 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:46,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 05:31:46,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:46,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:46,001 INFO L85 PathProgramCache]: Analyzing trace with hash 165533583, now seen corresponding path program 1 times [2023-12-16 05:31:46,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:46,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843034007] [2023-12-16 05:31:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:46,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 05:31:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 05:31:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 05:31:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-16 05:31:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 05:31:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 05:31:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-16 05:31:46,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:46,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843034007] [2023-12-16 05:31:46,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843034007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:46,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:46,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 05:31:46,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928850936] [2023-12-16 05:31:46,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:46,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 05:31:46,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:46,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 05:31:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-16 05:31:46,151 INFO L87 Difference]: Start difference. First operand 319 states and 502 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 05:31:47,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:47,217 INFO L93 Difference]: Finished difference Result 681 states and 1082 transitions. [2023-12-16 05:31:47,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 05:31:47,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2023-12-16 05:31:47,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:47,220 INFO L225 Difference]: With dead ends: 681 [2023-12-16 05:31:47,220 INFO L226 Difference]: Without dead ends: 385 [2023-12-16 05:31:47,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-12-16 05:31:47,221 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 825 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:47,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 959 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 05:31:47,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-16 05:31:47,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 319. [2023-12-16 05:31:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 243 states have (on average 1.5843621399176955) internal successors, (385), 250 states have internal predecessors, (385), 53 states have call successors, (53), 18 states have call predecessors, (53), 22 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2023-12-16 05:31:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 502 transitions. [2023-12-16 05:31:47,234 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 502 transitions. Word has length 116 [2023-12-16 05:31:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:47,234 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 502 transitions. [2023-12-16 05:31:47,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-16 05:31:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 502 transitions. [2023-12-16 05:31:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-16 05:31:47,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:47,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:47,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 05:31:47,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:47,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:47,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2052096815, now seen corresponding path program 1 times [2023-12-16 05:31:47,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:47,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250243463] [2023-12-16 05:31:47,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:47,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 05:31:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 05:31:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 05:31:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-16 05:31:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 05:31:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 05:31:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-16 05:31:47,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:47,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250243463] [2023-12-16 05:31:47,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250243463] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:31:47,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921563614] [2023-12-16 05:31:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:47,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:31:47,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:31:47,422 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) [2023-12-16 05:31:47,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 05:31:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:47,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 05:31:47,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:31:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:31:47,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 05:31:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:31:47,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921563614] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 05:31:47,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 05:31:47,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-12-16 05:31:47,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317849897] [2023-12-16 05:31:47,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 05:31:47,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 05:31:47,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:47,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 05:31:47,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-12-16 05:31:47,753 INFO L87 Difference]: Start difference. First operand 319 states and 502 transitions. Second operand has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-16 05:31:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:49,506 INFO L93 Difference]: Finished difference Result 1008 states and 1689 transitions. [2023-12-16 05:31:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 05:31:49,507 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 116 [2023-12-16 05:31:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:49,510 INFO L225 Difference]: With dead ends: 1008 [2023-12-16 05:31:49,510 INFO L226 Difference]: Without dead ends: 715 [2023-12-16 05:31:49,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-12-16 05:31:49,512 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1929 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 3469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:49,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 1515 Invalid, 3469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 05:31:49,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-12-16 05:31:49,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 634. [2023-12-16 05:31:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 494 states have (on average 1.625506072874494) internal successors, (803), 501 states have internal predecessors, (803), 117 states have call successors, (117), 18 states have call predecessors, (117), 22 states have return successors, (138), 116 states have call predecessors, (138), 116 states have call successors, (138) [2023-12-16 05:31:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1058 transitions. [2023-12-16 05:31:49,535 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1058 transitions. Word has length 116 [2023-12-16 05:31:49,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:49,535 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 1058 transitions. [2023-12-16 05:31:49,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-16 05:31:49,535 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1058 transitions. [2023-12-16 05:31:49,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-16 05:31:49,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:49,538 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:49,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 05:31:49,744 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 [2023-12-16 05:31:49,745 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:49,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:49,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1727692194, now seen corresponding path program 1 times [2023-12-16 05:31:49,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:49,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072220535] [2023-12-16 05:31:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:49,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-16 05:31:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-16 05:31:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 05:31:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-16 05:31:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-16 05:31:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-16 05:31:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:31:49,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:49,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072220535] [2023-12-16 05:31:49,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072220535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:49,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:49,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:31:49,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518184660] [2023-12-16 05:31:49,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:49,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:31:49,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:49,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:31:49,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:31:49,813 INFO L87 Difference]: Start difference. First operand 634 states and 1058 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:50,639 INFO L93 Difference]: Finished difference Result 1563 states and 2678 transitions. [2023-12-16 05:31:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 05:31:50,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2023-12-16 05:31:50,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:50,644 INFO L225 Difference]: With dead ends: 1563 [2023-12-16 05:31:50,644 INFO L226 Difference]: Without dead ends: 997 [2023-12-16 05:31:50,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:31:50,648 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 927 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:50,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 733 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 05:31:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-16 05:31:50,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2023-12-16 05:31:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 722 states have (on average 1.634349030470914) internal successors, (1180), 729 states have internal predecessors, (1180), 181 states have call successors, (181), 18 states have call predecessors, (181), 22 states have return successors, (212), 180 states have call predecessors, (212), 180 states have call successors, (212) [2023-12-16 05:31:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1573 transitions. [2023-12-16 05:31:50,682 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1573 transitions. Word has length 120 [2023-12-16 05:31:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:50,682 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1573 transitions. [2023-12-16 05:31:50,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1573 transitions. [2023-12-16 05:31:50,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-16 05:31:50,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:50,686 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:50,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 05:31:50,687 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:50,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:50,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1308768025, now seen corresponding path program 1 times [2023-12-16 05:31:50,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:50,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677595400] [2023-12-16 05:31:50,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:50,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-16 05:31:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-16 05:31:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-16 05:31:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-16 05:31:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-16 05:31:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-16 05:31:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:31:50,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:50,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677595400] [2023-12-16 05:31:50,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677595400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:50,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:50,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:31:50,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685168507] [2023-12-16 05:31:50,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:50,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:31:50,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:50,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:31:50,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:31:50,763 INFO L87 Difference]: Start difference. First operand 926 states and 1573 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:51,568 INFO L93 Difference]: Finished difference Result 2280 states and 3935 transitions. [2023-12-16 05:31:51,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 05:31:51,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2023-12-16 05:31:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:51,575 INFO L225 Difference]: With dead ends: 2280 [2023-12-16 05:31:51,575 INFO L226 Difference]: Without dead ends: 1472 [2023-12-16 05:31:51,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:31:51,578 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 918 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:51,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 709 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 05:31:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2023-12-16 05:31:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1401. [2023-12-16 05:31:51,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1102 states have (on average 1.6370235934664248) internal successors, (1804), 1109 states have internal predecessors, (1804), 276 states have call successors, (276), 18 states have call predecessors, (276), 22 states have return successors, (307), 275 states have call predecessors, (307), 275 states have call successors, (307) [2023-12-16 05:31:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2387 transitions. [2023-12-16 05:31:51,621 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2387 transitions. Word has length 121 [2023-12-16 05:31:51,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:51,622 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 2387 transitions. [2023-12-16 05:31:51,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2387 transitions. [2023-12-16 05:31:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-16 05:31:51,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:51,627 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:51,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 05:31:51,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:51,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash -205076236, now seen corresponding path program 1 times [2023-12-16 05:31:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:51,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478182064] [2023-12-16 05:31:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:51,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-16 05:31:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:31:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-16 05:31:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-16 05:31:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 05:31:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-16 05:31:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:31:51,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478182064] [2023-12-16 05:31:51,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478182064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:51,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:51,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:31:51,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005756713] [2023-12-16 05:31:51,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:51,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:31:51,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:51,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:31:51,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:31:51,697 INFO L87 Difference]: Start difference. First operand 1401 states and 2387 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:52,566 INFO L93 Difference]: Finished difference Result 3342 states and 5813 transitions. [2023-12-16 05:31:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 05:31:52,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-12-16 05:31:52,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:52,578 INFO L225 Difference]: With dead ends: 3342 [2023-12-16 05:31:52,578 INFO L226 Difference]: Without dead ends: 2187 [2023-12-16 05:31:52,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:31:52,582 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 913 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:52,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 701 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 05:31:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2023-12-16 05:31:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2116. [2023-12-16 05:31:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1694 states have (on average 1.639905548996458) internal successors, (2778), 1701 states have internal predecessors, (2778), 399 states have call successors, (399), 18 states have call predecessors, (399), 22 states have return successors, (446), 398 states have call predecessors, (446), 398 states have call successors, (446) [2023-12-16 05:31:52,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 3623 transitions. [2023-12-16 05:31:52,661 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 3623 transitions. Word has length 122 [2023-12-16 05:31:52,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:52,661 INFO L495 AbstractCegarLoop]: Abstraction has 2116 states and 3623 transitions. [2023-12-16 05:31:52,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:52,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 3623 transitions. [2023-12-16 05:31:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 05:31:52,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:52,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:52,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 05:31:52,670 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:52,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash 727383288, now seen corresponding path program 1 times [2023-12-16 05:31:52,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:52,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045215427] [2023-12-16 05:31:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:52,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-16 05:31:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 05:31:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-16 05:31:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-16 05:31:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-16 05:31:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-16 05:31:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:52,742 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:31:52,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:52,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045215427] [2023-12-16 05:31:52,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045215427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:52,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:52,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:31:52,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754043015] [2023-12-16 05:31:52,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:52,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:31:52,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:52,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:31:52,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:31:52,744 INFO L87 Difference]: Start difference. First operand 2116 states and 3623 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:53,692 INFO L93 Difference]: Finished difference Result 4984 states and 8726 transitions. [2023-12-16 05:31:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 05:31:53,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2023-12-16 05:31:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:53,706 INFO L225 Difference]: With dead ends: 4984 [2023-12-16 05:31:53,706 INFO L226 Difference]: Without dead ends: 3323 [2023-12-16 05:31:53,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:31:53,711 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 929 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:53,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 701 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 05:31:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2023-12-16 05:31:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3252. [2023-12-16 05:31:53,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3252 states, 2651 states have (on average 1.6416446623915504) internal successors, (4352), 2658 states have internal predecessors, (4352), 578 states have call successors, (578), 18 states have call predecessors, (578), 22 states have return successors, (651), 577 states have call predecessors, (651), 577 states have call successors, (651) [2023-12-16 05:31:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 5581 transitions. [2023-12-16 05:31:53,820 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 5581 transitions. Word has length 123 [2023-12-16 05:31:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:53,821 INFO L495 AbstractCegarLoop]: Abstraction has 3252 states and 5581 transitions. [2023-12-16 05:31:53,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 5581 transitions. [2023-12-16 05:31:53,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 05:31:53,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:53,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:53,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 05:31:53,834 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:53,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:53,834 INFO L85 PathProgramCache]: Analyzing trace with hash 215944408, now seen corresponding path program 1 times [2023-12-16 05:31:53,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:53,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851634960] [2023-12-16 05:31:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:53,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-16 05:31:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 05:31:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 05:31:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-16 05:31:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-16 05:31:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-16 05:31:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:31:53,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:53,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851634960] [2023-12-16 05:31:53,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851634960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:53,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:53,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:31:53,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553929597] [2023-12-16 05:31:53,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:53,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:31:53,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:53,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:31:53,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:31:53,923 INFO L87 Difference]: Start difference. First operand 3252 states and 5581 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:54,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:54,875 INFO L93 Difference]: Finished difference Result 7939 states and 13924 transitions. [2023-12-16 05:31:54,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 05:31:54,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2023-12-16 05:31:54,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:54,895 INFO L225 Difference]: With dead ends: 7939 [2023-12-16 05:31:54,895 INFO L226 Difference]: Without dead ends: 5381 [2023-12-16 05:31:54,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:31:54,903 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 924 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:54,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 749 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 05:31:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5381 states. [2023-12-16 05:31:55,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5381 to 5310. [2023-12-16 05:31:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5310 states, 4333 states have (on average 1.6328179090699284) internal successors, (7075), 4340 states have internal predecessors, (7075), 954 states have call successors, (954), 18 states have call predecessors, (954), 22 states have return successors, (1071), 953 states have call predecessors, (1071), 953 states have call successors, (1071) [2023-12-16 05:31:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 9100 transitions. [2023-12-16 05:31:55,085 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 9100 transitions. Word has length 124 [2023-12-16 05:31:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:55,085 INFO L495 AbstractCegarLoop]: Abstraction has 5310 states and 9100 transitions. [2023-12-16 05:31:55,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 9100 transitions. [2023-12-16 05:31:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-16 05:31:55,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:55,103 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:55,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 05:31:55,103 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:55,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1007892756, now seen corresponding path program 1 times [2023-12-16 05:31:55,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:55,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302286161] [2023-12-16 05:31:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:55,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-16 05:31:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-16 05:31:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-16 05:31:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-16 05:31:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 05:31:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-16 05:31:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:31:55,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:55,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302286161] [2023-12-16 05:31:55,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302286161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:55,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:55,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:31:55,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298273498] [2023-12-16 05:31:55,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:31:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:55,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:31:55,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:31:55,175 INFO L87 Difference]: Start difference. First operand 5310 states and 9100 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:56,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:56,172 INFO L93 Difference]: Finished difference Result 13144 states and 23008 transitions. [2023-12-16 05:31:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 05:31:56,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2023-12-16 05:31:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:56,241 INFO L225 Difference]: With dead ends: 13144 [2023-12-16 05:31:56,241 INFO L226 Difference]: Without dead ends: 8914 [2023-12-16 05:31:56,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:31:56,250 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 922 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:56,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 715 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 05:31:56,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8914 states. [2023-12-16 05:31:56,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8914 to 8843. [2023-12-16 05:31:56,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8843 states, 7260 states have (on average 1.6297520661157026) internal successors, (11832), 7267 states have internal predecessors, (11832), 1560 states have call successors, (1560), 18 states have call predecessors, (1560), 22 states have return successors, (1755), 1559 states have call predecessors, (1755), 1559 states have call successors, (1755) [2023-12-16 05:31:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8843 states to 8843 states and 15147 transitions. [2023-12-16 05:31:56,545 INFO L78 Accepts]: Start accepts. Automaton has 8843 states and 15147 transitions. Word has length 125 [2023-12-16 05:31:56,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:56,545 INFO L495 AbstractCegarLoop]: Abstraction has 8843 states and 15147 transitions. [2023-12-16 05:31:56,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:56,545 INFO L276 IsEmpty]: Start isEmpty. Operand 8843 states and 15147 transitions. [2023-12-16 05:31:56,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 05:31:56,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:56,566 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:56,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 05:31:56,566 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:56,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:56,567 INFO L85 PathProgramCache]: Analyzing trace with hash 833520566, now seen corresponding path program 1 times [2023-12-16 05:31:56,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:56,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112473765] [2023-12-16 05:31:56,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:56,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-16 05:31:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-16 05:31:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-16 05:31:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-16 05:31:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-16 05:31:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-16 05:31:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:31:56,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:56,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112473765] [2023-12-16 05:31:56,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112473765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:56,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:56,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:31:56,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196552477] [2023-12-16 05:31:56,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:56,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:31:56,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:56,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:31:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:31:56,637 INFO L87 Difference]: Start difference. First operand 8843 states and 15147 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:57,698 INFO L93 Difference]: Finished difference Result 22916 states and 40037 transitions. [2023-12-16 05:31:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 05:31:57,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2023-12-16 05:31:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:57,760 INFO L225 Difference]: With dead ends: 22916 [2023-12-16 05:31:57,761 INFO L226 Difference]: Without dead ends: 15586 [2023-12-16 05:31:57,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:31:57,786 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 905 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:57,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 738 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 05:31:57,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15586 states. [2023-12-16 05:31:58,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15586 to 15515. [2023-12-16 05:31:58,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15515 states, 12729 states have (on average 1.620001571215335) internal successors, (20621), 12736 states have internal predecessors, (20621), 2763 states have call successors, (2763), 18 states have call predecessors, (2763), 22 states have return successors, (3102), 2762 states have call predecessors, (3102), 2762 states have call successors, (3102) [2023-12-16 05:31:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15515 states to 15515 states and 26486 transitions. [2023-12-16 05:31:58,365 INFO L78 Accepts]: Start accepts. Automaton has 15515 states and 26486 transitions. Word has length 126 [2023-12-16 05:31:58,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:31:58,365 INFO L495 AbstractCegarLoop]: Abstraction has 15515 states and 26486 transitions. [2023-12-16 05:31:58,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:58,365 INFO L276 IsEmpty]: Start isEmpty. Operand 15515 states and 26486 transitions. [2023-12-16 05:31:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 05:31:58,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:31:58,395 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:31:58,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 05:31:58,396 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:31:58,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:31:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1811033939, now seen corresponding path program 1 times [2023-12-16 05:31:58,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:31:58,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127819156] [2023-12-16 05:31:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:31:58,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:31:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:31:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:31:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:31:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:31:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:31:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:31:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 05:31:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-16 05:31:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-16 05:31:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-16 05:31:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-16 05:31:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-16 05:31:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:31:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:31:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:31:58,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:31:58,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127819156] [2023-12-16 05:31:58,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127819156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:31:58,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:31:58,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:31:58,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174831313] [2023-12-16 05:31:58,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:31:58,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:31:58,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:31:58,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:31:58,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:31:58,472 INFO L87 Difference]: Start difference. First operand 15515 states and 26486 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:31:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:31:59,736 INFO L93 Difference]: Finished difference Result 41083 states and 71635 transitions. [2023-12-16 05:31:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 05:31:59,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2023-12-16 05:31:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:31:59,825 INFO L225 Difference]: With dead ends: 41083 [2023-12-16 05:31:59,825 INFO L226 Difference]: Without dead ends: 27701 [2023-12-16 05:31:59,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:31:59,855 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 898 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 05:31:59,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 705 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 05:31:59,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27701 states. [2023-12-16 05:32:00,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27701 to 27630. [2023-12-16 05:32:00,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27630 states, 22805 states have (on average 1.6157860118395089) internal successors, (36848), 22812 states have internal predecessors, (36848), 4802 states have call successors, (4802), 18 states have call predecessors, (4802), 22 states have return successors, (5415), 4801 states have call predecessors, (5415), 4801 states have call successors, (5415) [2023-12-16 05:32:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27630 states to 27630 states and 47065 transitions. [2023-12-16 05:32:00,958 INFO L78 Accepts]: Start accepts. Automaton has 27630 states and 47065 transitions. Word has length 127 [2023-12-16 05:32:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:32:00,958 INFO L495 AbstractCegarLoop]: Abstraction has 27630 states and 47065 transitions. [2023-12-16 05:32:00,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:32:00,958 INFO L276 IsEmpty]: Start isEmpty. Operand 27630 states and 47065 transitions. [2023-12-16 05:32:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 05:32:00,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:32:00,987 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:32:00,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 05:32:00,987 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:32:00,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:32:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1446913588, now seen corresponding path program 1 times [2023-12-16 05:32:00,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:32:00,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775484418] [2023-12-16 05:32:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:32:00,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:32:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:32:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:32:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:32:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:32:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:32:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:32:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-16 05:32:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-16 05:32:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-16 05:32:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-16 05:32:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-16 05:32:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-16 05:32:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:32:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:32:01,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:32:01,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775484418] [2023-12-16 05:32:01,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775484418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:32:01,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:32:01,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:32:01,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914806129] [2023-12-16 05:32:01,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:32:01,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:32:01,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:32:01,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:32:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:32:01,062 INFO L87 Difference]: Start difference. First operand 27630 states and 47065 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:32:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:32:02,959 INFO L93 Difference]: Finished difference Result 75275 states and 130429 transitions. [2023-12-16 05:32:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 05:32:02,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2023-12-16 05:32:02,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:32:03,131 INFO L225 Difference]: With dead ends: 75275 [2023-12-16 05:32:03,131 INFO L226 Difference]: Without dead ends: 50525 [2023-12-16 05:32:03,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:32:03,186 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 916 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 05:32:03,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 719 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 05:32:03,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50525 states. [2023-12-16 05:32:04,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50525 to 50454. [2023-12-16 05:32:04,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50454 states, 41914 states have (on average 1.6103449921267357) internal successors, (67496), 41921 states have internal predecessors, (67496), 8517 states have call successors, (8517), 18 states have call predecessors, (8517), 22 states have return successors, (9662), 8516 states have call predecessors, (9662), 8516 states have call successors, (9662) [2023-12-16 05:32:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50454 states to 50454 states and 85675 transitions. [2023-12-16 05:32:05,001 INFO L78 Accepts]: Start accepts. Automaton has 50454 states and 85675 transitions. Word has length 128 [2023-12-16 05:32:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:32:05,001 INFO L495 AbstractCegarLoop]: Abstraction has 50454 states and 85675 transitions. [2023-12-16 05:32:05,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:32:05,002 INFO L276 IsEmpty]: Start isEmpty. Operand 50454 states and 85675 transitions. [2023-12-16 05:32:05,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 05:32:05,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:32:05,302 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:32:05,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 05:32:05,303 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:32:05,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:32:05,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2140825325, now seen corresponding path program 1 times [2023-12-16 05:32:05,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:32:05,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173163222] [2023-12-16 05:32:05,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:32:05,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:32:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:32:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:32:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:32:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:32:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:32:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:32:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-16 05:32:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-16 05:32:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-16 05:32:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-16 05:32:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-16 05:32:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-16 05:32:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:32:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:32:05,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:32:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173163222] [2023-12-16 05:32:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173163222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:32:05,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:32:05,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 05:32:05,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326741356] [2023-12-16 05:32:05,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:32:05,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 05:32:05,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:32:05,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 05:32:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 05:32:05,477 INFO L87 Difference]: Start difference. First operand 50454 states and 85675 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:32:07,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:32:07,825 INFO L93 Difference]: Finished difference Result 94022 states and 163335 transitions. [2023-12-16 05:32:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 05:32:07,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2023-12-16 05:32:07,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:32:08,092 INFO L225 Difference]: With dead ends: 94022 [2023-12-16 05:32:08,092 INFO L226 Difference]: Without dead ends: 93905 [2023-12-16 05:32:08,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-16 05:32:08,130 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 917 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 05:32:08,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 702 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 05:32:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93905 states. [2023-12-16 05:32:10,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93905 to 93834. [2023-12-16 05:32:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93834 states, 78495 states have (on average 1.603465188865533) internal successors, (125864), 78502 states have internal predecessors, (125864), 15316 states have call successors, (15316), 18 states have call predecessors, (15316), 22 states have return successors, (17507), 15315 states have call predecessors, (17507), 15315 states have call successors, (17507) [2023-12-16 05:32:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93834 states to 93834 states and 158687 transitions. [2023-12-16 05:32:11,585 INFO L78 Accepts]: Start accepts. Automaton has 93834 states and 158687 transitions. Word has length 129 [2023-12-16 05:32:11,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:32:11,586 INFO L495 AbstractCegarLoop]: Abstraction has 93834 states and 158687 transitions. [2023-12-16 05:32:11,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-16 05:32:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 93834 states and 158687 transitions. [2023-12-16 05:32:11,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 05:32:11,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:32:11,649 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:32:11,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 05:32:11,649 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:32:11,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:32:11,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1939916683, now seen corresponding path program 1 times [2023-12-16 05:32:11,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:32:11,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310259988] [2023-12-16 05:32:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:32:11,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:32:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:11,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:32:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:11,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:32:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:32:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:32:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:32:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:32:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-16 05:32:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-16 05:32:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 05:32:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-16 05:32:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-16 05:32:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-16 05:32:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:32:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-16 05:32:12,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:32:12,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310259988] [2023-12-16 05:32:12,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310259988] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 05:32:12,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877172743] [2023-12-16 05:32:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:32:12,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 05:32:12,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 05:32:12,070 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) [2023-12-16 05:32:12,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 05:32:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:12,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 05:32:12,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 05:32:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 05:32:12,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 05:32:12,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877172743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:32:12,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 05:32:12,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 26 [2023-12-16 05:32:12,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234185931] [2023-12-16 05:32:12,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:32:12,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 05:32:12,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:32:12,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 05:32:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2023-12-16 05:32:12,637 INFO L87 Difference]: Start difference. First operand 93834 states and 158687 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-16 05:32:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 05:32:16,642 INFO L93 Difference]: Finished difference Result 186967 states and 321697 transitions. [2023-12-16 05:32:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 05:32:16,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 130 [2023-12-16 05:32:16,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 05:32:17,607 INFO L225 Difference]: With dead ends: 186967 [2023-12-16 05:32:17,607 INFO L226 Difference]: Without dead ends: 186855 [2023-12-16 05:32:17,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=1162, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 05:32:17,681 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1044 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 05:32:17,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 3133 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 05:32:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186855 states. [2023-12-16 05:32:23,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186855 to 186831. [2023-12-16 05:32:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186831 states, 156360 states have (on average 1.6044384753133794) internal successors, (250870), 156262 states have internal predecessors, (250870), 30417 states have call successors, (30417), 47 states have call predecessors, (30417), 53 states have return successors, (38070), 30527 states have call predecessors, (38070), 30414 states have call successors, (38070) [2023-12-16 05:32:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186831 states to 186831 states and 319357 transitions. [2023-12-16 05:32:24,632 INFO L78 Accepts]: Start accepts. Automaton has 186831 states and 319357 transitions. Word has length 130 [2023-12-16 05:32:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 05:32:24,633 INFO L495 AbstractCegarLoop]: Abstraction has 186831 states and 319357 transitions. [2023-12-16 05:32:24,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 9 states have internal predecessors, (96), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-16 05:32:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 186831 states and 319357 transitions. [2023-12-16 05:32:24,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-16 05:32:24,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 05:32:24,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:32:24,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 05:32:24,927 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 [2023-12-16 05:32:24,935 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 05:32:24,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 05:32:24,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1100774392, now seen corresponding path program 1 times [2023-12-16 05:32:24,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 05:32:24,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005600998] [2023-12-16 05:32:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 05:32:24,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 05:32:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 05:32:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-16 05:32:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-16 05:32:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-16 05:32:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-16 05:32:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 05:32:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-16 05:32:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-16 05:32:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-16 05:32:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-16 05:32:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 05:32:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 05:32:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 05:32:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 05:32:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-16 05:32:25,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 05:32:25,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005600998] [2023-12-16 05:32:25,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005600998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 05:32:25,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 05:32:25,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-16 05:32:25,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615124634] [2023-12-16 05:32:25,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 05:32:25,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 05:32:25,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 05:32:25,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 05:32:25,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-16 05:32:25,344 INFO L87 Difference]: Start difference. First operand 186831 states and 319357 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 6 states have internal predecessors, (87), 5 states have call successors, (15), 7 states have call predecessors, (15), 1 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Received shutdown request... [2023-12-16 05:32:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 05:32:27,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2023-12-16 05:32:27,919 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1516 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 2251 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 05:32:27,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1169 Invalid, 2654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2251 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 05:32:27,920 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 05:32:27,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 05:32:27,921 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (186831states) and FLOYD_HOARE automaton (currently 20 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (42701 states constructed, input type IntersectNwa). [2023-12-16 05:32:27,924 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:32:27,926 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 05:32:27,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:32:27 BoogieIcfgContainer [2023-12-16 05:32:27,927 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 05:32:27,928 INFO L158 Benchmark]: Toolchain (without parser) took 54207.17ms. Allocated memory was 272.6MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 218.9MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-16 05:32:27,928 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 05:32:27,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 575.44ms. Allocated memory is still 272.6MB. Free memory was 218.4MB in the beginning and 177.9MB in the end (delta: 40.5MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-16 05:32:27,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.09ms. Allocated memory is still 272.6MB. Free memory was 177.9MB in the beginning and 172.8MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-16 05:32:27,928 INFO L158 Benchmark]: Boogie Preprocessor took 99.93ms. Allocated memory is still 272.6MB. Free memory was 172.8MB in the beginning and 166.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 05:32:27,928 INFO L158 Benchmark]: RCFGBuilder took 908.20ms. Allocated memory is still 272.6MB. Free memory was 166.5MB in the beginning and 103.6MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-12-16 05:32:27,929 INFO L158 Benchmark]: TraceAbstraction took 52550.21ms. Allocated memory was 272.6MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 103.1MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-16 05:32:27,929 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 575.44ms. Allocated memory is still 272.6MB. Free memory was 218.4MB in the beginning and 177.9MB in the end (delta: 40.5MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 69.09ms. Allocated memory is still 272.6MB. Free memory was 177.9MB in the beginning and 172.8MB in the end (delta: 5.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 99.93ms. Allocated memory is still 272.6MB. Free memory was 172.8MB in the beginning and 166.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 908.20ms. Allocated memory is still 272.6MB. Free memory was 166.5MB in the beginning and 103.6MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. * TraceAbstraction took 52550.21ms. Allocated memory was 272.6MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 103.1MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 48]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] - GenericResultAtLocation [Line: 460]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [460] - GenericResultAtLocation [Line: 493]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [493] - GenericResultAtLocation [Line: 768]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [768] - GenericResultAtLocation [Line: 1842]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1842] - GenericResultAtLocation [Line: 1859]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1859] - GenericResultAtLocation [Line: 2084]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2084] - GenericResultAtLocation [Line: 2093]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2093] - GenericResultAtLocation [Line: 2131]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2131] - GenericResultAtLocation [Line: 2406]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2406] - GenericResultAtLocation [Line: 2772]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2772] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 2089]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 2089). Cancelled while NwaCegarLoop was constructing difference of abstraction (186831states) and FLOYD_HOARE automaton (currently 20 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (42701 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data [2023-12-16 05:32:27,933 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end CFG has 19 procedures, 265 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.5s, OverallIterations: 23, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.6s, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18116 SdHoareTripleChecker+Valid, 15.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17907 mSDsluCounter, 23459 SdHoareTripleChecker+Invalid, 12.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18330 mSDsCounter, 5519 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26813 IncrementalHoareTripleChecker+Invalid, 32332 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5519 mSolverCounterUnsat, 5129 mSDtfsCounter, 26813 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1824 GetRequests, 1483 SyntacticMatches, 0 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186831occurred in iteration=22, InterpolantAutomatonStates: 208, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.8s AutomataMinimizationTime, 22 MinimizatonAttempts, 1150 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 3504 NumberOfCodeBlocks, 3504 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3589 ConstructedInterpolants, 0 QuantifiedInterpolants, 6513 SizeOfPredicates, 22 NumberOfNonLiveVariables, 7135 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 31 InterpolantComputations, 22 PerfectInterpolantSequences, 1030/1058 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown