/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_spec9_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 10:04:54,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 10:04:54,985 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 10:04:54,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 10:04:54,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 10:04:55,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 10:04:55,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 10:04:55,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 10:04:55,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 10:04:55,016 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 10:04:55,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 10:04:55,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 10:04:55,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 10:04:55,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 10:04:55,018 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 10:04:55,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 10:04:55,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 10:04:55,018 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 10:04:55,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 10:04:55,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 10:04:55,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 10:04:55,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 10:04:55,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 10:04:55,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 10:04:55,020 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 10:04:55,020 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 10:04:55,020 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 10:04:55,021 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 10:04:55,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 10:04:55,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 10:04:55,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 10:04:55,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 10:04:55,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:04:55,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 10:04:55,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 10:04:55,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 10:04:55,022 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 10:04:55,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 10:04:55,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 10:04:55,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 10:04:55,023 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 10:04:55,023 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 10:04:55,023 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 10:04:55,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 10:04:55,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 10:04:55,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 10:04:55,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 10:04:55,229 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 10:04:55,232 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 10:04:55,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product12.cil.c [2023-12-21 10:04:56,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 10:04:56,493 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 10:04:56,493 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product12.cil.c [2023-12-21 10:04:56,513 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45338bf0/600c59549a6840f7870d7a161bfd3b82/FLAG701792406 [2023-12-21 10:04:56,523 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45338bf0/600c59549a6840f7870d7a161bfd3b82 [2023-12-21 10:04:56,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 10:04:56,526 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 10:04:56,526 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 10:04:56,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 10:04:56,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 10:04:56,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:04:56" (1/1) ... [2023-12-21 10:04:56,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6476eca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:56, skipping insertion in model container [2023-12-21 10:04:56,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:04:56" (1/1) ... [2023-12-21 10:04:56,590 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 10:04:56,905 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_spec9_product12.cil.c[29763,29776] [2023-12-21 10:04:56,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:04:56,962 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 10:04:56,971 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptForward_spec.i","") [48] [2023-12-21 10:04:56,973 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [105] [2023-12-21 10:04:56,973 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [122] [2023-12-21 10:04:56,973 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [160] [2023-12-21 10:04:56,973 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [405] [2023-12-21 10:04:56,973 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [811] [2023-12-21 10:04:56,974 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1091] [2023-12-21 10:04:56,974 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1457] [2023-12-21 10:04:56,974 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1466] [2023-12-21 10:04:56,975 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1570] [2023-12-21 10:04:56,975 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2639] [2023-12-21 10:04:57,055 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_spec9_product12.cil.c[29763,29776] [2023-12-21 10:04:57,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:04:57,116 INFO L206 MainTranslator]: Completed translation [2023-12-21 10:04:57,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57 WrapperNode [2023-12-21 10:04:57,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 10:04:57,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 10:04:57,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 10:04:57,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 10:04:57,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,205 INFO L138 Inliner]: procedures = 123, calls = 177, calls flagged for inlining = 51, calls inlined = 41, statements flattened = 826 [2023-12-21 10:04:57,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 10:04:57,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 10:04:57,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 10:04:57,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 10:04:57,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,235 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,255 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]. [2023-12-21 10:04:57,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,255 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 10:04:57,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 10:04:57,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 10:04:57,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 10:04:57,316 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (1/1) ... [2023-12-21 10:04:57,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:04:57,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:04:57,340 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) [2023-12-21 10:04:57,360 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 [2023-12-21 10:04:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-12-21 10:04:57,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-12-21 10:04:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-12-21 10:04:57,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-12-21 10:04:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-21 10:04:57,371 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-21 10:04:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-21 10:04:57,371 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-21 10:04:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-21 10:04:57,371 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-21 10:04:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-12-21 10:04:57,371 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-12-21 10:04:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-21 10:04:57,372 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-21 10:04:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-21 10:04:57,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-21 10:04:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 10:04:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-21 10:04:57,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-21 10:04:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-21 10:04:57,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-21 10:04:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-21 10:04:57,374 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-21 10:04:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-21 10:04:57,375 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-21 10:04:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-12-21 10:04:57,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-12-21 10:04:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-21 10:04:57,375 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-21 10:04:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 10:04:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 10:04:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-21 10:04:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-21 10:04:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-21 10:04:57,375 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-21 10:04:57,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 10:04:57,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 10:04:57,540 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 10:04:57,542 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 10:04:58,056 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 10:04:58,105 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 10:04:58,105 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 10:04:58,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:04:58 BoogieIcfgContainer [2023-12-21 10:04:58,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 10:04:58,107 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 10:04:58,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 10:04:58,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 10:04:58,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:04:56" (1/3) ... [2023-12-21 10:04:58,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e0aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:04:58, skipping insertion in model container [2023-12-21 10:04:58,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:57" (2/3) ... [2023-12-21 10:04:58,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e0aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:04:58, skipping insertion in model container [2023-12-21 10:04:58,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:04:58" (3/3) ... [2023-12-21 10:04:58,112 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product12.cil.c [2023-12-21 10:04:58,124 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 10:04:58,124 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 10:04:58,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 10:04:58,172 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;@5432bb04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 10:04:58,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 10:04:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 184 states have (on average 1.6195652173913044) internal successors, (298), 188 states have internal predecessors, (298), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-21 10:04:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 10:04:58,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:04:58,200 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-12-21 10:04:58,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:04:58,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:04:58,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1586924661, now seen corresponding path program 1 times [2023-12-21 10:04:58,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:04:58,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591403089] [2023-12-21 10:04:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:04:58,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:04:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:04:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:04:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:04:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:04:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:04:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:04:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 10:04:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 10:04:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 10:04:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 10:04:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 10:04:58,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:04:58,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591403089] [2023-12-21 10:04:58,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591403089] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:04:58,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255073498] [2023-12-21 10:04:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:04:58,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:04:58,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:04:58,752 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) [2023-12-21 10:04:58,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 10:04:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:58,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 10:04:58,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:04:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:04:59,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:04:59,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255073498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:04:59,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:04:59,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2023-12-21 10:04:59,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467225426] [2023-12-21 10:04:59,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:04:59,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 10:04:59,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:04:59,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 10:04:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 10:04:59,031 INFO L87 Difference]: Start difference. First operand has 240 states, 184 states have (on average 1.6195652173913044) internal successors, (298), 188 states have internal predecessors, (298), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:04:59,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:04:59,152 INFO L93 Difference]: Finished difference Result 339 states and 522 transitions. [2023-12-21 10:04:59,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 10:04:59,154 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2023-12-21 10:04:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:04:59,162 INFO L225 Difference]: With dead ends: 339 [2023-12-21 10:04:59,162 INFO L226 Difference]: Without dead ends: 237 [2023-12-21 10:04:59,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 10:04:59,167 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:04:59,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 362 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:04:59,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-21 10:04:59,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2023-12-21 10:04:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 182 states have (on average 1.598901098901099) internal successors, (291), 185 states have internal predecessors, (291), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-21 10:04:59,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 368 transitions. [2023-12-21 10:04:59,218 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 368 transitions. Word has length 80 [2023-12-21 10:04:59,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:04:59,219 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 368 transitions. [2023-12-21 10:04:59,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:04:59,219 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 368 transitions. [2023-12-21 10:04:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 10:04:59,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:04:59,222 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-12-21 10:04:59,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 10:04:59,428 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 [2023-12-21 10:04:59,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:04:59,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:04:59,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1635089019, now seen corresponding path program 1 times [2023-12-21 10:04:59,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:04:59,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892441078] [2023-12-21 10:04:59,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:04:59,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:04:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:04:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:04:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:04:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:04:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:04:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:04:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-21 10:04:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 10:04:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:04:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 10:04:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-21 10:04:59,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:04:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892441078] [2023-12-21 10:04:59,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892441078] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:04:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699579113] [2023-12-21 10:04:59,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:04:59,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:04:59,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:04:59,637 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) [2023-12-21 10:04:59,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 10:04:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:04:59,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 10:04:59,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:04:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:04:59,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:04:59,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699579113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:04:59,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:04:59,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-21 10:04:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274133343] [2023-12-21 10:04:59,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:04:59,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 10:04:59,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:04:59,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 10:04:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:04:59,917 INFO L87 Difference]: Start difference. First operand 237 states and 368 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:04:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:04:59,973 INFO L93 Difference]: Finished difference Result 335 states and 509 transitions. [2023-12-21 10:04:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 10:04:59,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 81 [2023-12-21 10:04:59,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:04:59,979 INFO L225 Difference]: With dead ends: 335 [2023-12-21 10:04:59,979 INFO L226 Difference]: Without dead ends: 239 [2023-12-21 10:04:59,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:04:59,981 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 0 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:04:59,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 717 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:04:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-21 10:05:00,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-12-21 10:05:00,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 184 states have (on average 1.5923913043478262) internal successors, (293), 187 states have internal predecessors, (293), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-21 10:05:00,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 370 transitions. [2023-12-21 10:05:00,008 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 370 transitions. Word has length 81 [2023-12-21 10:05:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:00,008 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 370 transitions. [2023-12-21 10:05:00,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:00,009 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 370 transitions. [2023-12-21 10:05:00,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 10:05:00,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:00,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-12-21 10:05:00,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 10:05:00,220 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 [2023-12-21 10:05:00,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:00,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1708651565, now seen corresponding path program 1 times [2023-12-21 10:05:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:00,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056397871] [2023-12-21 10:05:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:00,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:05:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:05:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:05:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-12-21 10:05:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 10:05:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:05:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 10:05:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:05:00,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:00,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056397871] [2023-12-21 10:05:00,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056397871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:05:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167676689] [2023-12-21 10:05:00,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:00,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:00,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:05:00,429 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) [2023-12-21 10:05:00,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 10:05:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:00,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 10:05:00,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:05:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:05:00,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:05:00,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167676689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:00,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:05:00,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-21 10:05:00,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76499318] [2023-12-21 10:05:00,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:00,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 10:05:00,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:00,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 10:05:00,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:05:00,647 INFO L87 Difference]: Start difference. First operand 239 states and 370 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:00,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:00,682 INFO L93 Difference]: Finished difference Result 504 states and 792 transitions. [2023-12-21 10:05:00,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 10:05:00,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-12-21 10:05:00,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:00,692 INFO L225 Difference]: With dead ends: 504 [2023-12-21 10:05:00,692 INFO L226 Difference]: Without dead ends: 287 [2023-12-21 10:05:00,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:05:00,696 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 95 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:00,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 687 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:05:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-21 10:05:00,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 282. [2023-12-21 10:05:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 216 states have (on average 1.6018518518518519) internal successors, (346), 219 states have internal predecessors, (346), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-12-21 10:05:00,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 445 transitions. [2023-12-21 10:05:00,715 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 445 transitions. Word has length 86 [2023-12-21 10:05:00,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:00,715 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 445 transitions. [2023-12-21 10:05:00,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:00,715 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 445 transitions. [2023-12-21 10:05:00,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 10:05:00,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:00,722 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-12-21 10:05:00,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 10:05:00,928 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 [2023-12-21 10:05:00,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:00,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash -308274607, now seen corresponding path program 1 times [2023-12-21 10:05:00,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:00,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041115756] [2023-12-21 10:05:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:00,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 10:05:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 10:05:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 10:05:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 10:05:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-21 10:05:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 10:05:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 10:05:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:05:01,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:01,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041115756] [2023-12-21 10:05:01,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041115756] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:05:01,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859121509] [2023-12-21 10:05:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:01,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:01,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:05:01,062 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) [2023-12-21 10:05:01,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 10:05:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 10:05:01,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:05:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 10:05:01,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:05:01,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859121509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:01,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:05:01,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-21 10:05:01,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103210418] [2023-12-21 10:05:01,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:01,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:05:01,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:05:01,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-21 10:05:01,311 INFO L87 Difference]: Start difference. First operand 282 states and 445 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 10:05:01,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:01,409 INFO L93 Difference]: Finished difference Result 559 states and 884 transitions. [2023-12-21 10:05:01,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:05:01,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2023-12-21 10:05:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:01,414 INFO L225 Difference]: With dead ends: 559 [2023-12-21 10:05:01,414 INFO L226 Difference]: Without dead ends: 284 [2023-12-21 10:05:01,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-21 10:05:01,419 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 8 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:01,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1389 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:05:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-12-21 10:05:01,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-12-21 10:05:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 217 states have (on average 1.599078341013825) internal successors, (347), 221 states have internal predecessors, (347), 50 states have call successors, (50), 15 states have call predecessors, (50), 16 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2023-12-21 10:05:01,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 448 transitions. [2023-12-21 10:05:01,439 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 448 transitions. Word has length 87 [2023-12-21 10:05:01,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:01,439 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 448 transitions. [2023-12-21 10:05:01,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 10:05:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 448 transitions. [2023-12-21 10:05:01,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 10:05:01,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:01,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2023-12-21 10:05:01,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 10:05:01,651 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 [2023-12-21 10:05:01,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:01,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:01,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1231540806, now seen corresponding path program 1 times [2023-12-21 10:05:01,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:01,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882185994] [2023-12-21 10:05:01,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:01,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 10:05:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-12-21 10:05:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 10:05:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 10:05:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 10:05:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 10:05:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 10:05:01,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:01,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882185994] [2023-12-21 10:05:01,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882185994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:05:01,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046878272] [2023-12-21 10:05:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:01,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:01,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:05:01,817 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) [2023-12-21 10:05:01,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 10:05:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 10:05:02,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:05:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 10:05:02,041 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:05:02,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046878272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:02,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:05:02,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-21 10:05:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125221225] [2023-12-21 10:05:02,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:02,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:05:02,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:02,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:05:02,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:05:02,042 INFO L87 Difference]: Start difference. First operand 284 states and 448 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 10:05:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:02,107 INFO L93 Difference]: Finished difference Result 561 states and 889 transitions. [2023-12-21 10:05:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 10:05:02,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2023-12-21 10:05:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:02,109 INFO L225 Difference]: With dead ends: 561 [2023-12-21 10:05:02,109 INFO L226 Difference]: Without dead ends: 286 [2023-12-21 10:05:02,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-21 10:05:02,110 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 8 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1375 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 [2023-12-21 10:05:02,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1375 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:05:02,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-12-21 10:05:02,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2023-12-21 10:05:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 218 states have (on average 1.5963302752293578) internal successors, (348), 223 states have internal predecessors, (348), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2023-12-21 10:05:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 454 transitions. [2023-12-21 10:05:02,119 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 454 transitions. Word has length 88 [2023-12-21 10:05:02,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:02,119 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 454 transitions. [2023-12-21 10:05:02,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 10:05:02,119 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 454 transitions. [2023-12-21 10:05:02,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 10:05:02,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:02,121 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 10:05:02,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 10:05:02,326 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 [2023-12-21 10:05:02,328 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:02,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:02,328 INFO L85 PathProgramCache]: Analyzing trace with hash 16013830, now seen corresponding path program 1 times [2023-12-21 10:05:02,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:02,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498207454] [2023-12-21 10:05:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:02,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 10:05:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 10:05:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 10:05:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 10:05:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:05:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:05:02,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:02,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498207454] [2023-12-21 10:05:02,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498207454] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:02,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:02,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 10:05:02,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640998236] [2023-12-21 10:05:02,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:02,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 10:05:02,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:02,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 10:05:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 10:05:02,438 INFO L87 Difference]: Start difference. First operand 286 states and 454 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 10:05:03,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:03,329 INFO L93 Difference]: Finished difference Result 598 states and 956 transitions. [2023-12-21 10:05:03,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:03,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2023-12-21 10:05:03,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:03,331 INFO L225 Difference]: With dead ends: 598 [2023-12-21 10:05:03,331 INFO L226 Difference]: Without dead ends: 331 [2023-12-21 10:05:03,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:05:03,333 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 554 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:03,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 812 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:05:03,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-21 10:05:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 286. [2023-12-21 10:05:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 218 states have (on average 1.5963302752293578) internal successors, (348), 223 states have internal predecessors, (348), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2023-12-21 10:05:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 453 transitions. [2023-12-21 10:05:03,347 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 453 transitions. Word has length 89 [2023-12-21 10:05:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:03,347 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 453 transitions. [2023-12-21 10:05:03,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 10:05:03,347 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 453 transitions. [2023-12-21 10:05:03,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 10:05:03,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:03,348 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 10:05:03,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 10:05:03,349 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:03,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:03,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1150960653, now seen corresponding path program 2 times [2023-12-21 10:05:03,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:03,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6085493] [2023-12-21 10:05:03,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:03,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:03,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:03,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 10:05:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 10:05:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 10:05:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:03,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 10:05:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:03,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 10:05:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-21 10:05:03,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6085493] [2023-12-21 10:05:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6085493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:03,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:03,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 10:05:03,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34962895] [2023-12-21 10:05:03,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:03,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 10:05:03,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 10:05:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 10:05:03,468 INFO L87 Difference]: Start difference. First operand 286 states and 453 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 10:05:04,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:04,225 INFO L93 Difference]: Finished difference Result 600 states and 959 transitions. [2023-12-21 10:05:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 10:05:04,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2023-12-21 10:05:04,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:04,227 INFO L225 Difference]: With dead ends: 600 [2023-12-21 10:05:04,227 INFO L226 Difference]: Without dead ends: 333 [2023-12-21 10:05:04,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:05:04,228 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 550 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:04,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 812 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 10:05:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-21 10:05:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 288. [2023-12-21 10:05:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 219 states have (on average 1.5936073059360731) internal successors, (349), 225 states have internal predecessors, (349), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2023-12-21 10:05:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 456 transitions. [2023-12-21 10:05:04,241 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 456 transitions. Word has length 90 [2023-12-21 10:05:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:04,241 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 456 transitions. [2023-12-21 10:05:04,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 10:05:04,241 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 456 transitions. [2023-12-21 10:05:04,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 10:05:04,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:04,243 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 10:05:04,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 10:05:04,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:04,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:04,243 INFO L85 PathProgramCache]: Analyzing trace with hash -918644053, now seen corresponding path program 1 times [2023-12-21 10:05:04,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:04,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180941160] [2023-12-21 10:05:04,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:04,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:04,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:04,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:04,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:04,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:04,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 10:05:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:04,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 10:05:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:05:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 10:05:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 10:05:04,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:04,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180941160] [2023-12-21 10:05:04,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180941160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:04,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:04,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 10:05:04,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298606227] [2023-12-21 10:05:04,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:04,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 10:05:04,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:04,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 10:05:04,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 10:05:04,377 INFO L87 Difference]: Start difference. First operand 288 states and 456 transitions. Second operand has 11 states, 10 states have (on average 6.1) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-21 10:05:05,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:05,617 INFO L93 Difference]: Finished difference Result 598 states and 954 transitions. [2023-12-21 10:05:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 10:05:05,619 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 91 [2023-12-21 10:05:05,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:05,621 INFO L225 Difference]: With dead ends: 598 [2023-12-21 10:05:05,621 INFO L226 Difference]: Without dead ends: 333 [2023-12-21 10:05:05,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-21 10:05:05,622 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 559 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:05,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 1163 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 10:05:05,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-21 10:05:05,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 288. [2023-12-21 10:05:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 219 states have (on average 1.5936073059360731) internal successors, (349), 225 states have internal predecessors, (349), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2023-12-21 10:05:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 455 transitions. [2023-12-21 10:05:05,634 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 455 transitions. Word has length 91 [2023-12-21 10:05:05,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:05,635 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 455 transitions. [2023-12-21 10:05:05,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-21 10:05:05,635 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 455 transitions. [2023-12-21 10:05:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 10:05:05,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:05,636 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:05,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 10:05:05,636 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:05,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:05,637 INFO L85 PathProgramCache]: Analyzing trace with hash 568841689, now seen corresponding path program 2 times [2023-12-21 10:05:05,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:05,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473381400] [2023-12-21 10:05:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:05,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:05,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:05,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:05,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:05,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:05,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 10:05:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 10:05:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:05,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 10:05:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:05,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 10:05:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-21 10:05:05,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:05,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473381400] [2023-12-21 10:05:05,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473381400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:05,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:05,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 10:05:05,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948828287] [2023-12-21 10:05:05,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:05,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 10:05:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:05,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 10:05:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 10:05:05,766 INFO L87 Difference]: Start difference. First operand 288 states and 455 transitions. Second operand has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-21 10:05:06,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:06,976 INFO L93 Difference]: Finished difference Result 600 states and 960 transitions. [2023-12-21 10:05:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 10:05:06,976 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 92 [2023-12-21 10:05:06,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:06,978 INFO L225 Difference]: With dead ends: 600 [2023-12-21 10:05:06,978 INFO L226 Difference]: Without dead ends: 335 [2023-12-21 10:05:06,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-12-21 10:05:06,979 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 555 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:06,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1163 Invalid, 2598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 10:05:06,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-21 10:05:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 290. [2023-12-21 10:05:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 220 states have (on average 1.5909090909090908) internal successors, (350), 227 states have internal predecessors, (350), 50 states have call successors, (50), 15 states have call predecessors, (50), 19 states have return successors, (61), 49 states have call predecessors, (61), 49 states have call successors, (61) [2023-12-21 10:05:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 461 transitions. [2023-12-21 10:05:06,990 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 461 transitions. Word has length 92 [2023-12-21 10:05:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:06,990 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 461 transitions. [2023-12-21 10:05:06,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-21 10:05:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 461 transitions. [2023-12-21 10:05:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 10:05:06,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:06,991 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:06,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 10:05:06,991 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:06,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1601472528, now seen corresponding path program 1 times [2023-12-21 10:05:06,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:06,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321322660] [2023-12-21 10:05:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:06,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 10:05:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 10:05:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 10:05:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 10:05:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321322660] [2023-12-21 10:05:07,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321322660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:05:07,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954671225] [2023-12-21 10:05:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:07,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:07,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:05:07,075 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) [2023-12-21 10:05:07,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 10:05:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:07,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 10:05:07,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:05:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:07,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:05:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:07,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954671225] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 10:05:07,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 10:05:07,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-12-21 10:05:07,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690334588] [2023-12-21 10:05:07,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 10:05:07,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 10:05:07,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:07,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 10:05:07,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:07,341 INFO L87 Difference]: Start difference. First operand 290 states and 461 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 10:05:08,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:08,238 INFO L93 Difference]: Finished difference Result 741 states and 1245 transitions. [2023-12-21 10:05:08,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 10:05:08,238 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 93 [2023-12-21 10:05:08,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:08,241 INFO L225 Difference]: With dead ends: 741 [2023-12-21 10:05:08,241 INFO L226 Difference]: Without dead ends: 645 [2023-12-21 10:05:08,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:05:08,262 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 954 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:08,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1043 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:05:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-21 10:05:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 585. [2023-12-21 10:05:08,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 451 states have (on average 1.6407982261640799) internal successors, (740), 458 states have internal predecessors, (740), 114 states have call successors, (114), 15 states have call predecessors, (114), 19 states have return successors, (135), 113 states have call predecessors, (135), 113 states have call successors, (135) [2023-12-21 10:05:08,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 989 transitions. [2023-12-21 10:05:08,286 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 989 transitions. Word has length 93 [2023-12-21 10:05:08,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:08,287 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 989 transitions. [2023-12-21 10:05:08,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (24), 5 states have call predecessors, (24), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-21 10:05:08,287 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 989 transitions. [2023-12-21 10:05:08,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 10:05:08,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:08,289 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 10:05:08,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 10:05:08,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:05:08,498 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:08,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:08,499 INFO L85 PathProgramCache]: Analyzing trace with hash 340478701, now seen corresponding path program 1 times [2023-12-21 10:05:08,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:08,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066815108] [2023-12-21 10:05:08,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:08,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:08,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:08,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:08,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:08,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 10:05:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:05:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:08,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 10:05:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 10:05:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:08,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:08,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066815108] [2023-12-21 10:05:08,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066815108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:08,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:08,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:05:08,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415848728] [2023-12-21 10:05:08,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:08,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:05:08,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:08,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:05:08,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:05:08,581 INFO L87 Difference]: Start difference. First operand 585 states and 989 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:09,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:09,280 INFO L93 Difference]: Finished difference Result 1452 states and 2514 transitions. [2023-12-21 10:05:09,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:05:09,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2023-12-21 10:05:09,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:09,284 INFO L225 Difference]: With dead ends: 1452 [2023-12-21 10:05:09,285 INFO L226 Difference]: Without dead ends: 927 [2023-12-21 10:05:09,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:09,287 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 637 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:09,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 602 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:05:09,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2023-12-21 10:05:09,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 877. [2023-12-21 10:05:09,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 679 states have (on average 1.6450662739322532) internal successors, (1117), 686 states have internal predecessors, (1117), 178 states have call successors, (178), 15 states have call predecessors, (178), 19 states have return successors, (209), 177 states have call predecessors, (209), 177 states have call successors, (209) [2023-12-21 10:05:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1504 transitions. [2023-12-21 10:05:09,313 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1504 transitions. Word has length 99 [2023-12-21 10:05:09,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:09,313 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1504 transitions. [2023-12-21 10:05:09,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1504 transitions. [2023-12-21 10:05:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 10:05:09,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:09,317 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 10:05:09,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 10:05:09,317 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:09,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:09,317 INFO L85 PathProgramCache]: Analyzing trace with hash -284132076, now seen corresponding path program 1 times [2023-12-21 10:05:09,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:09,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608850399] [2023-12-21 10:05:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:09,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:09,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:09,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:09,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:09,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:09,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 10:05:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:09,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 10:05:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 10:05:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 10:05:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:09,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:09,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608850399] [2023-12-21 10:05:09,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608850399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:09,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:09,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:05:09,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593679465] [2023-12-21 10:05:09,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:09,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:05:09,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:05:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:05:09,382 INFO L87 Difference]: Start difference. First operand 877 states and 1504 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:10,059 INFO L93 Difference]: Finished difference Result 2149 states and 3741 transitions. [2023-12-21 10:05:10,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:05:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2023-12-21 10:05:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:10,066 INFO L225 Difference]: With dead ends: 2149 [2023-12-21 10:05:10,067 INFO L226 Difference]: Without dead ends: 1382 [2023-12-21 10:05:10,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:10,070 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 635 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:10,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 571 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:05:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2023-12-21 10:05:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1332. [2023-12-21 10:05:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1039 states have (on average 1.6467757459095285) internal successors, (1711), 1046 states have internal predecessors, (1711), 273 states have call successors, (273), 15 states have call predecessors, (273), 19 states have return successors, (304), 272 states have call predecessors, (304), 272 states have call successors, (304) [2023-12-21 10:05:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 2288 transitions. [2023-12-21 10:05:10,115 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 2288 transitions. Word has length 100 [2023-12-21 10:05:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:10,115 INFO L495 AbstractCegarLoop]: Abstraction has 1332 states and 2288 transitions. [2023-12-21 10:05:10,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 2288 transitions. [2023-12-21 10:05:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 10:05:10,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:10,120 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:10,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 10:05:10,121 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:10,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:10,121 INFO L85 PathProgramCache]: Analyzing trace with hash -544784209, now seen corresponding path program 1 times [2023-12-21 10:05:10,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:10,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408046173] [2023-12-21 10:05:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:10,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 10:05:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 10:05:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 10:05:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 10:05:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:10,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:10,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408046173] [2023-12-21 10:05:10,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408046173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:10,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:10,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:05:10,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066251683] [2023-12-21 10:05:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:10,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:05:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:10,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:05:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:05:10,210 INFO L87 Difference]: Start difference. First operand 1332 states and 2288 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:10,838 INFO L93 Difference]: Finished difference Result 3167 states and 5553 transitions. [2023-12-21 10:05:10,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:05:10,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2023-12-21 10:05:10,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:10,846 INFO L225 Difference]: With dead ends: 3167 [2023-12-21 10:05:10,846 INFO L226 Difference]: Without dead ends: 2065 [2023-12-21 10:05:10,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:10,850 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 633 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:10,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 571 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 10:05:10,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2023-12-21 10:05:10,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 2015. [2023-12-21 10:05:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1599 states have (on average 1.6491557223264541) internal successors, (2637), 1606 states have internal predecessors, (2637), 396 states have call successors, (396), 15 states have call predecessors, (396), 19 states have return successors, (443), 395 states have call predecessors, (443), 395 states have call successors, (443) [2023-12-21 10:05:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3476 transitions. [2023-12-21 10:05:10,918 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3476 transitions. Word has length 101 [2023-12-21 10:05:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:10,919 INFO L495 AbstractCegarLoop]: Abstraction has 2015 states and 3476 transitions. [2023-12-21 10:05:10,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3476 transitions. [2023-12-21 10:05:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 10:05:10,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:10,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 10:05:10,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 10:05:10,926 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:10,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2115373931, now seen corresponding path program 1 times [2023-12-21 10:05:10,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:10,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643549796] [2023-12-21 10:05:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:10,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:10,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-12-21 10:05:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 10:05:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-21 10:05:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 10:05:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:11,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:11,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643549796] [2023-12-21 10:05:11,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643549796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:11,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:11,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:05:11,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270500255] [2023-12-21 10:05:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:11,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:05:11,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:11,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:05:11,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:05:11,013 INFO L87 Difference]: Start difference. First operand 2015 states and 3476 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:11,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:11,748 INFO L93 Difference]: Finished difference Result 4737 states and 8358 transitions. [2023-12-21 10:05:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:05:11,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2023-12-21 10:05:11,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:11,783 INFO L225 Difference]: With dead ends: 4737 [2023-12-21 10:05:11,784 INFO L226 Difference]: Without dead ends: 3149 [2023-12-21 10:05:11,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:11,788 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 631 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:11,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 570 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:05:11,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2023-12-21 10:05:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3099. [2023-12-21 10:05:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2504 states have (on average 1.65055910543131) internal successors, (4133), 2511 states have internal predecessors, (4133), 575 states have call successors, (575), 15 states have call predecessors, (575), 19 states have return successors, (648), 574 states have call predecessors, (648), 574 states have call successors, (648) [2023-12-21 10:05:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 5356 transitions. [2023-12-21 10:05:11,886 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 5356 transitions. Word has length 102 [2023-12-21 10:05:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:11,887 INFO L495 AbstractCegarLoop]: Abstraction has 3099 states and 5356 transitions. [2023-12-21 10:05:11,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 5356 transitions. [2023-12-21 10:05:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 10:05:11,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:11,894 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 10:05:11,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 10:05:11,894 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:11,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:11,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1299700853, now seen corresponding path program 1 times [2023-12-21 10:05:11,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:11,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669496097] [2023-12-21 10:05:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:11,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 10:05:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 10:05:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 10:05:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 10:05:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:11,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:11,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669496097] [2023-12-21 10:05:11,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669496097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:11,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:11,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:05:11,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150337060] [2023-12-21 10:05:11,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:11,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:05:11,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:05:11,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:05:11,957 INFO L87 Difference]: Start difference. First operand 3099 states and 5356 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:12,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:12,581 INFO L93 Difference]: Finished difference Result 7568 states and 13370 transitions. [2023-12-21 10:05:12,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:05:12,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2023-12-21 10:05:12,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:12,604 INFO L225 Difference]: With dead ends: 7568 [2023-12-21 10:05:12,604 INFO L226 Difference]: Without dead ends: 5119 [2023-12-21 10:05:12,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:12,614 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 629 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:12,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 592 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 10:05:12,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2023-12-21 10:05:12,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 5069. [2023-12-21 10:05:12,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 4098 states have (on average 1.6408003904343582) internal successors, (6724), 4105 states have internal predecessors, (6724), 951 states have call successors, (951), 15 states have call predecessors, (951), 19 states have return successors, (1068), 950 states have call predecessors, (1068), 950 states have call successors, (1068) [2023-12-21 10:05:12,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 8743 transitions. [2023-12-21 10:05:12,789 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 8743 transitions. Word has length 103 [2023-12-21 10:05:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:12,789 INFO L495 AbstractCegarLoop]: Abstraction has 5069 states and 8743 transitions. [2023-12-21 10:05:12,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:12,790 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 8743 transitions. [2023-12-21 10:05:12,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 10:05:12,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:12,799 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 10:05:12,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 10:05:12,799 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:12,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:12,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1018021447, now seen corresponding path program 1 times [2023-12-21 10:05:12,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:12,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214569286] [2023-12-21 10:05:12,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:12,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:12,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:12,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:12,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:12,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:12,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:05:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:12,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:05:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 10:05:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 10:05:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:12,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:12,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214569286] [2023-12-21 10:05:12,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214569286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:12,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:12,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:05:12,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510381944] [2023-12-21 10:05:12,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:12,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:05:12,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:12,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:05:12,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:05:12,902 INFO L87 Difference]: Start difference. First operand 5069 states and 8743 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:13,688 INFO L93 Difference]: Finished difference Result 12549 states and 22118 transitions. [2023-12-21 10:05:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:05:13,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2023-12-21 10:05:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:13,731 INFO L225 Difference]: With dead ends: 12549 [2023-12-21 10:05:13,731 INFO L226 Difference]: Without dead ends: 8496 [2023-12-21 10:05:13,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:13,749 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 627 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:13,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 577 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:05:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8496 states. [2023-12-21 10:05:14,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8496 to 8446. [2023-12-21 10:05:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8446 states, 6869 states have (on average 1.6373562381714952) internal successors, (11247), 6876 states have internal predecessors, (11247), 1557 states have call successors, (1557), 15 states have call predecessors, (1557), 19 states have return successors, (1752), 1556 states have call predecessors, (1752), 1556 states have call successors, (1752) [2023-12-21 10:05:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8446 states to 8446 states and 14556 transitions. [2023-12-21 10:05:14,045 INFO L78 Accepts]: Start accepts. Automaton has 8446 states and 14556 transitions. Word has length 104 [2023-12-21 10:05:14,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:14,046 INFO L495 AbstractCegarLoop]: Abstraction has 8446 states and 14556 transitions. [2023-12-21 10:05:14,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 8446 states and 14556 transitions. [2023-12-21 10:05:14,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 10:05:14,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:14,058 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 10:05:14,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 10:05:14,059 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:14,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:14,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1542431955, now seen corresponding path program 1 times [2023-12-21 10:05:14,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:14,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426577402] [2023-12-21 10:05:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:14,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:14,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:14,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:14,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:14,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:14,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 10:05:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:14,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 10:05:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-12-21 10:05:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 10:05:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:14,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:14,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426577402] [2023-12-21 10:05:14,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426577402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:14,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:14,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:05:14,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766697413] [2023-12-21 10:05:14,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:14,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:05:14,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:14,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:05:14,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:05:14,123 INFO L87 Difference]: Start difference. First operand 8446 states and 14556 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:14,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:14,968 INFO L93 Difference]: Finished difference Result 21901 states and 38517 transitions. [2023-12-21 10:05:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:05:14,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2023-12-21 10:05:14,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:15,014 INFO L225 Difference]: With dead ends: 21901 [2023-12-21 10:05:15,014 INFO L226 Difference]: Without dead ends: 14880 [2023-12-21 10:05:15,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:15,032 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 625 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:15,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 595 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:05:15,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14880 states. [2023-12-21 10:05:15,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14880 to 14830. [2023-12-21 10:05:15,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14830 states, 12050 states have (on average 1.6268879668049792) internal successors, (19604), 12057 states have internal predecessors, (19604), 2760 states have call successors, (2760), 15 states have call predecessors, (2760), 19 states have return successors, (3099), 2759 states have call predecessors, (3099), 2759 states have call successors, (3099) [2023-12-21 10:05:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14830 states to 14830 states and 25463 transitions. [2023-12-21 10:05:15,524 INFO L78 Accepts]: Start accepts. Automaton has 14830 states and 25463 transitions. Word has length 105 [2023-12-21 10:05:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:15,525 INFO L495 AbstractCegarLoop]: Abstraction has 14830 states and 25463 transitions. [2023-12-21 10:05:15,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 14830 states and 25463 transitions. [2023-12-21 10:05:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 10:05:15,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:15,547 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 10:05:15,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 10:05:15,547 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:15,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:15,548 INFO L85 PathProgramCache]: Analyzing trace with hash 699966682, now seen corresponding path program 1 times [2023-12-21 10:05:15,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:15,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792201334] [2023-12-21 10:05:15,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:15,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:15,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:15,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:15,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 10:05:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:15,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 10:05:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:15,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 10:05:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 10:05:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:15,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:15,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792201334] [2023-12-21 10:05:15,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792201334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:15,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:15,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:05:15,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559853565] [2023-12-21 10:05:15,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:15,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:05:15,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:15,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:05:15,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:05:15,616 INFO L87 Difference]: Start difference. First operand 14830 states and 25463 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:16,694 INFO L93 Difference]: Finished difference Result 39260 states and 68903 transitions. [2023-12-21 10:05:16,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:05:16,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2023-12-21 10:05:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:16,785 INFO L225 Difference]: With dead ends: 39260 [2023-12-21 10:05:16,785 INFO L226 Difference]: Without dead ends: 26447 [2023-12-21 10:05:16,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:16,819 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 623 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:16,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 572 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 10:05:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26447 states. [2023-12-21 10:05:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26447 to 26397. [2023-12-21 10:05:17,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26397 states, 21578 states have (on average 1.6224395217351006) internal successors, (35009), 21585 states have internal predecessors, (35009), 4799 states have call successors, (4799), 15 states have call predecessors, (4799), 19 states have return successors, (5412), 4798 states have call predecessors, (5412), 4798 states have call successors, (5412) [2023-12-21 10:05:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26397 states to 26397 states and 45220 transitions. [2023-12-21 10:05:17,709 INFO L78 Accepts]: Start accepts. Automaton has 26397 states and 45220 transitions. Word has length 106 [2023-12-21 10:05:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:17,709 INFO L495 AbstractCegarLoop]: Abstraction has 26397 states and 45220 transitions. [2023-12-21 10:05:17,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 26397 states and 45220 transitions. [2023-12-21 10:05:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 10:05:17,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:17,734 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 10:05:17,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 10:05:17,735 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:17,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash 376836911, now seen corresponding path program 1 times [2023-12-21 10:05:17,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:17,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529336048] [2023-12-21 10:05:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 10:05:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 10:05:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 10:05:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 10:05:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:17,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:17,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529336048] [2023-12-21 10:05:17,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529336048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:17,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:17,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:05:17,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710616704] [2023-12-21 10:05:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:17,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:05:17,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:17,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:05:17,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:05:17,814 INFO L87 Difference]: Start difference. First operand 26397 states and 45220 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:19,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:19,289 INFO L93 Difference]: Finished difference Result 71872 states and 125327 transitions. [2023-12-21 10:05:19,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:05:19,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2023-12-21 10:05:19,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:19,454 INFO L225 Difference]: With dead ends: 71872 [2023-12-21 10:05:19,454 INFO L226 Difference]: Without dead ends: 48207 [2023-12-21 10:05:19,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:19,511 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 621 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:19,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 580 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:05:19,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48207 states. [2023-12-21 10:05:21,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48207 to 48157. [2023-12-21 10:05:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48157 states, 39623 states have (on average 1.6167629911919845) internal successors, (64061), 39630 states have internal predecessors, (64061), 8514 states have call successors, (8514), 15 states have call predecessors, (8514), 19 states have return successors, (9659), 8513 states have call predecessors, (9659), 8513 states have call successors, (9659) [2023-12-21 10:05:21,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48157 states to 48157 states and 82234 transitions. [2023-12-21 10:05:21,238 INFO L78 Accepts]: Start accepts. Automaton has 48157 states and 82234 transitions. Word has length 107 [2023-12-21 10:05:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:21,238 INFO L495 AbstractCegarLoop]: Abstraction has 48157 states and 82234 transitions. [2023-12-21 10:05:21,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:21,238 INFO L276 IsEmpty]: Start isEmpty. Operand 48157 states and 82234 transitions. [2023-12-21 10:05:21,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 10:05:21,260 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:21,260 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-12-21 10:05:21,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 10:05:21,261 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:21,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1885380058, now seen corresponding path program 1 times [2023-12-21 10:05:21,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:21,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399703989] [2023-12-21 10:05:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:21,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 10:05:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 10:05:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 10:05:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 10:05:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:21,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:21,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399703989] [2023-12-21 10:05:21,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399703989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:21,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:21,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 10:05:21,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892565002] [2023-12-21 10:05:21,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:21,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:05:21,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:21,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:05:21,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:05:21,330 INFO L87 Difference]: Start difference. First operand 48157 states and 82234 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:23,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:23,651 INFO L93 Difference]: Finished difference Result 89591 states and 156691 transitions. [2023-12-21 10:05:23,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:05:23,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2023-12-21 10:05:23,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:23,946 INFO L225 Difference]: With dead ends: 89591 [2023-12-21 10:05:23,947 INFO L226 Difference]: Without dead ends: 89495 [2023-12-21 10:05:23,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 10:05:23,985 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 619 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:23,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 571 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 10:05:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89495 states. [2023-12-21 10:05:26,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89495 to 89445. [2023-12-21 10:05:26,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89445 states, 74112 states have (on average 1.6096043825561313) internal successors, (119291), 74119 states have internal predecessors, (119291), 15313 states have call successors, (15313), 15 states have call predecessors, (15313), 19 states have return successors, (17504), 15312 states have call predecessors, (17504), 15312 states have call successors, (17504) [2023-12-21 10:05:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89445 states to 89445 states and 152108 transitions. [2023-12-21 10:05:26,895 INFO L78 Accepts]: Start accepts. Automaton has 89445 states and 152108 transitions. Word has length 108 [2023-12-21 10:05:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:26,896 INFO L495 AbstractCegarLoop]: Abstraction has 89445 states and 152108 transitions. [2023-12-21 10:05:26,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:05:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 89445 states and 152108 transitions. [2023-12-21 10:05:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 10:05:26,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:26,914 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:26,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 10:05:26,915 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:26,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:26,915 INFO L85 PathProgramCache]: Analyzing trace with hash -494250098, now seen corresponding path program 1 times [2023-12-21 10:05:26,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:26,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406584312] [2023-12-21 10:05:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:26,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:05:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:05:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-12-21 10:05:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 10:05:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:27,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:27,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406584312] [2023-12-21 10:05:27,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406584312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:27,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:27,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 10:05:27,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871298969] [2023-12-21 10:05:27,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:27,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 10:05:27,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:27,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 10:05:27,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:05:27,208 INFO L87 Difference]: Start difference. First operand 89445 states and 152108 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-21 10:05:33,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:33,299 INFO L93 Difference]: Finished difference Result 178337 states and 315273 transitions. [2023-12-21 10:05:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 10:05:33,300 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 109 [2023-12-21 10:05:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:34,170 INFO L225 Difference]: With dead ends: 178337 [2023-12-21 10:05:34,170 INFO L226 Difference]: Without dead ends: 178248 [2023-12-21 10:05:34,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=426, Invalid=1296, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 10:05:34,235 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1776 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 3995 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 3995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:34,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 1790 Invalid, 4471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 3995 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 10:05:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178248 states. [2023-12-21 10:05:40,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178248 to 178092. [2023-12-21 10:05:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178092 states, 147639 states have (on average 1.6106381105263514) internal successors, (237793), 147541 states have internal predecessors, (237793), 30409 states have call successors, (30409), 38 states have call predecessors, (30409), 43 states have return successors, (38058), 30518 states have call predecessors, (38058), 30406 states have call successors, (38058) [2023-12-21 10:05:41,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178092 states to 178092 states and 306260 transitions. [2023-12-21 10:05:41,103 INFO L78 Accepts]: Start accepts. Automaton has 178092 states and 306260 transitions. Word has length 109 [2023-12-21 10:05:41,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:41,103 INFO L495 AbstractCegarLoop]: Abstraction has 178092 states and 306260 transitions. [2023-12-21 10:05:41,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-21 10:05:41,104 INFO L276 IsEmpty]: Start isEmpty. Operand 178092 states and 306260 transitions. [2023-12-21 10:05:41,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 10:05:41,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:41,136 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:41,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 10:05:41,136 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:41,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:41,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2043555376, now seen corresponding path program 1 times [2023-12-21 10:05:41,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:41,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006275105] [2023-12-21 10:05:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:41,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:05:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-12-21 10:05:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 10:05:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 10:05:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:41,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:41,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006275105] [2023-12-21 10:05:41,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006275105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:41,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:41,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:05:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839220811] [2023-12-21 10:05:41,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:41,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:05:41,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:41,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:05:41,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:05:41,221 INFO L87 Difference]: Start difference. First operand 178092 states and 306260 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 10:05:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:45,181 INFO L93 Difference]: Finished difference Result 178276 states and 313030 transitions. [2023-12-21 10:05:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 10:05:45,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2023-12-21 10:05:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:45,954 INFO L225 Difference]: With dead ends: 178276 [2023-12-21 10:05:45,955 INFO L226 Difference]: Without dead ends: 178098 [2023-12-21 10:05:46,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-12-21 10:05:46,015 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 562 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:46,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 703 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 10:05:46,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178098 states. [2023-12-21 10:05:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178098 to 178008. [2023-12-21 10:05:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178008 states, 147575 states have (on average 1.6106522107403016) internal successors, (237692), 147474 states have internal predecessors, (237692), 30396 states have call successors, (30396), 32 states have call predecessors, (30396), 36 states have return successors, (38045), 30505 states have call predecessors, (38045), 30394 states have call successors, (38045) [2023-12-21 10:05:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178008 states to 178008 states and 306133 transitions. [2023-12-21 10:05:52,002 INFO L78 Accepts]: Start accepts. Automaton has 178008 states and 306133 transitions. Word has length 110 [2023-12-21 10:05:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:05:52,002 INFO L495 AbstractCegarLoop]: Abstraction has 178008 states and 306133 transitions. [2023-12-21 10:05:52,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-21 10:05:52,003 INFO L276 IsEmpty]: Start isEmpty. Operand 178008 states and 306133 transitions. [2023-12-21 10:05:52,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 10:05:52,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:05:52,061 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:05:52,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 10:05:52,062 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:05:52,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:05:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1418561921, now seen corresponding path program 1 times [2023-12-21 10:05:52,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:05:52,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151312744] [2023-12-21 10:05:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:05:52,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:05:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:05:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:05:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:05:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:05:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:05:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:05:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:05:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:05:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 10:05:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 10:05:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:05:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:05:52,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:05:52,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151312744] [2023-12-21 10:05:52,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151312744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:05:52,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:05:52,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 10:05:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821030063] [2023-12-21 10:05:52,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:05:52,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 10:05:52,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:05:52,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 10:05:52,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 10:05:52,198 INFO L87 Difference]: Start difference. First operand 178008 states and 306133 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-21 10:05:57,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:05:57,418 INFO L93 Difference]: Finished difference Result 178428 states and 313270 transitions. [2023-12-21 10:05:57,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 10:05:57,419 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 110 [2023-12-21 10:05:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:05:58,194 INFO L225 Difference]: With dead ends: 178428 [2023-12-21 10:05:58,195 INFO L226 Difference]: Without dead ends: 178159 [2023-12-21 10:05:58,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2023-12-21 10:05:58,253 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1135 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 10:05:58,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1021 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 10:05:58,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178159 states. [2023-12-21 10:06:03,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178159 to 178051. [2023-12-21 10:06:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178051 states, 147608 states have (on average 1.6105969866131917) internal successors, (237737), 147507 states have internal predecessors, (237737), 30406 states have call successors, (30406), 34 states have call predecessors, (30406), 36 states have return successors, (38056), 30515 states have call predecessors, (38056), 30404 states have call successors, (38056) [2023-12-21 10:06:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178051 states to 178051 states and 306199 transitions. [2023-12-21 10:06:04,936 INFO L78 Accepts]: Start accepts. Automaton has 178051 states and 306199 transitions. Word has length 110 [2023-12-21 10:06:04,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:06:04,936 INFO L495 AbstractCegarLoop]: Abstraction has 178051 states and 306199 transitions. [2023-12-21 10:06:04,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-21 10:06:04,936 INFO L276 IsEmpty]: Start isEmpty. Operand 178051 states and 306199 transitions. [2023-12-21 10:06:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 10:06:04,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:06:04,967 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:06:04,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 10:06:04,967 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:06:04,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:06:04,968 INFO L85 PathProgramCache]: Analyzing trace with hash -179264857, now seen corresponding path program 1 times [2023-12-21 10:06:04,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:06:04,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087824788] [2023-12-21 10:06:04,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:06:04,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:06:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:06:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 10:06:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:05,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:06:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-21 10:06:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-21 10:06:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:06:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:05,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-21 10:06:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 10:06:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:05,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-12-21 10:06:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:05,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-21 10:06:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:06:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 10:06:05,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:06:05,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087824788] [2023-12-21 10:06:05,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087824788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:06:05,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:06:05,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 10:06:05,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782455951] [2023-12-21 10:06:05,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:06:05,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 10:06:05,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:06:05,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 10:06:05,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:06:05,492 INFO L87 Difference]: Start difference. First operand 178051 states and 306199 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-21 10:06:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:06:14,955 INFO L93 Difference]: Finished difference Result 353303 states and 631540 transitions. [2023-12-21 10:06:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 10:06:14,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 110 [2023-12-21 10:06:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:06:16,485 INFO L225 Difference]: With dead ends: 353303 [2023-12-21 10:06:16,485 INFO L226 Difference]: Without dead ends: 353098 [2023-12-21 10:06:16,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=414, Invalid=1308, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 10:06:16,616 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1888 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 3958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 10:06:16,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 1376 Invalid, 3958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 10:06:16,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353098 states. [2023-12-21 10:06:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353098 to 352876.